October 16, 2008, 11:08 am

The Cortical Homonculus

By Henry Woodbury

I recently came across two classic examples of visual explanation: neurosurgeon Wilder Penfield‘s two-dimensional map of brain functions and its three-dimensional cohort, the cortical homonculus:

A cortical homunculus is a physical representation of the primary motor cortex, i.e., the portion of the human brain directly responsible for the movement and exchange of sense and motor information (namely touch: sensitivity, cold, heat, pain etc.) of the rest of the body.

Sensory and motor homunculi

More information about brain function and Penfield’s maps can be found here.

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Filed under: Information Design, Visual Explanation


Bob Toski, the 84 year old noted and world renowned golf instructor, knew this 60 years ago and used it very successfully in his golf instruction.

Posted by John M. Kuhry on February 17, 2011 at 10:58 am  

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