Research overview: whisker representation in the somatosensory cortex

The brain devotes substantial tissue to processing whisker input, and this overview reviews how vibrissal touch is represented in the feline somatosensory cortex. The orderly array of muzzle whiskers maps onto an orderly array of cortical regions, so that the brain holds a topographic image of the whisker field, much as the better-known rodent barrel cortex does. This organisation reveals how tactile space is encoded. Researchers study it through cortical mapping and electrophysiology. Why it matters: the cortical map of the whiskers shows how heavily cats invest neural resources in close-range touch, reinforcing that vibrissae are a primary sense rather than an afterthought, and it links the anatomy of the whisker array to the brain, completing the path from a single deflected hair to a detailed neural representation of the nearby world.