What is somatotopy, where is somatotopic organization found and when is plasticity observed in somatotopic maps?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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What is somatotopy, where is somatotopic organization found and when is plasticity observed in somatotopic maps?
Transcribed Image Text:What is somatotopy, where is somatotopic organization found and when is plasticity observed in somatotopic maps?
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Somatotopy means the point for point correspondence of an area of body to a specific point on central nervous system.

*It is the area of the body that corresponds to a point on primary somatosensory cortex (postcentral gyrus) Which is represented as a sensory homunculus that orients the specific body parts.

*Areas like appendages and digits and penis and face will draw their sensory locations upon somatosensory cortex.

*The areas which are finely controlled like, the digits will have larger portions of somatosensory cortex.

* Areas which are controlled like the trunk, will have smaller portions.

*Areas like viscera will not have sensory locations on post central gyrus.

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