In a Study by Pons and Colleagues, Monkeys' Arm Nerves

Multiple Choice

In a study by Pons and colleagues, monkeys' arm nerves were cut, thereby depriving the somatosensory cortex of sensory input from the arm. Several years later, when the researchers mapped the monkeys' somatosensory homunculus, they discovered that the arm region of the homunculus:

A) had expanded.
B) was the same size it was previously.
C) had been taken over by the face region.
D) had been taken over by the foot region.