
5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.


5.3 Somatosensory Neurons have Receptive Fields

Each subcortical somatosensory neuron responds to modality-specific stimuli applied to a specific
region of the body or face.

For example, an axon in the medial lemniscus (i.e., the fiber tract) that responds to tactile
stimulation of the right index finger pad will not respond to tactile stimulation of any other
area in the hand, body or face. The stimulated area producing the response is called the neuron’s
receptive field (Figure 5.3). The neuron’s receptive field can also be defined anatomically as
that area of the sense organ (i.e., skin, muscles or joints) innervated directly or indirectly by
the neuron. Consequently, a somatosensory neuron can be described to channel information about
stimulus location - as well as stimulus modality. Furthermore, the size of a neuron’s receptive
field is related to the body area innervated/represented. The receptive fields of neurons
innervating/representing the finger pads, lips, and tongue are the smallest, whereas those of
neurons innervating/representing the shoulders, back and legs are the largest. For greater
accuracy in locating the point of stimulus contact or movement, smaller cutaneous receptive fields
are required. For fine motor control, as in playing the piano or speaking, small proprioceptive
receptive fields are required.

