Homunculus

Last revised by Assoc Prof Craig Hacking on 16 Aug 2018

A homunculus is a topographical-organized map of the proportional representation of the contralateral somatosensory or motor neurons on the cortex or passing though a part of the brain. The maps are often comical, as the body parts are disproportionally represented compared to their physical size.

There are 3 homunculi of importance:

History and etymology

Homunculus is latin for "little person".

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Cases and figures

  • Motor and sensory homunculus (illustrations)
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  • Sensory homunculus
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