In a study in which participants grasped and lifted an object positioned between the thumb and forefinger of their right hand, when transcranial magnetic stimulation was used to disrupt participants' left dorsal premotor cortex, they __________.
A. used a more forceful grip regardless of the object's weight
B. used a less forceful grip regardless of the object's weight
C. used a less forceful grip with the heavier object and a more forceful grip with the lighter object
D. were no longer able to grip objects
Answer: A
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