Unilateral excision of SI produces a contralateral deficit in the ability to
A) detect light touch.
B) identify objects by touch.
C) feel pain.
D) all of the above
E) both A and B

Question

Quizplus · Accepted Answer

The SI cortex plays a crucial role in somatosensory processing, including the ability to detect light touch and identify objects by touch. Unilateral excision of SI produces a contralateral deficit in these abilities, but typically does not affect the perception of pain, especially if the lesion is restricted to the cortex and does not involve underlying white matter fibers. Therefore, the correct answer is E – both A and B.

Unilateral Excision of SI Produces a Contralateral Deficit in the Ability