Cortical homunculus - A distorted visual representation of the human form, with body part proportions analogous to the size of the area of the brain responsible for controlling them
Cortical homunculus - A distorted visual representation of the human form, with body part proportions analogous to the size of the area of the brain responsible for controlling them
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Cortical homunculus - Wikipedia

The validity of the 'map' of the brain used as the basis for this idea has been called into question.