Bodies proportional to motor and sensory brain regions

Two images of notional "homunculi" — the first, a Sensory Homunculus, shows "what a man's body would look like if each part grew in proportion to the area of the cortex of the brain concerned with its sensory perception" (on the left). The other, the Motor Homunculus, "shows what a man's body would look like if each part grew in proportion to the area of the cortex of the brain concerned with its movement."

Link