In one classic experiment, monkeys could not move their fingers independently after transections of the
A) dorsolateral corticospinal tracts.
B) dorsolateral corticorubrospinal tracts.
C) ventromedial corticospinal tracts.
D) ventromedial cortico-brainstem-spinal tracts.
E) nigrostriatal tract.

Question

Quizplus · Accepted Answer

The dorsolateral corticospinal tracts are responsible for controlling fine, skilled movements such as those involved in finger dexterity. Transections of these tracts would therefore result in an inability to move fingers independently. The other options listed do not specifically involve the control of fine finger movements.

In One Classic Experiment, Monkeys Could Not Move Their Fingers