A stroke patient who loses function in the primary motor cortex may show a loss of
A) voluntary control of facial muscles but retain spontaneous expression.
B) spontaneous expression but retain voluntary control of facial muscles.
C) both voluntary control of facial muscles and spontaneous expression.
D) neither voluntary control of facial muscles nor spontaneous expression.

Question

Quizplus · Accepted Answer

Damage to the primary motor cortex can result in the loss of voluntary control over facial muscles, while spontaneous expressions, controlled by different brain areas, may remain intact.

A Stroke Patient Who Loses Function in the Primary Motor