Monkeys had difficulty letting go of food after their
A) dorsolateral corticorubrospinal tracts were transected.
B) dorsolateral corticospinal tracts were transected.
C) ventromedial corticospinal tracts were transected.
D) cerebellum was lesioned.
E) basal ganglia were lesioned.

Question

Quizplus · Accepted Answer

The dorsolateral corticospinal tracts are responsible for voluntary movement and fine motor control, including the ability to release and let go of objects. Therefore, if these tracts were transected, monkeys would have difficulty letting go of food. Lesioning the other brain regions listed may have different effects on movement control but would not specifically affect the ability to release objects.

Monkeys Had Difficulty Letting Go of Food After Their