Which of the following is a function of the primary somatosensory cortex?
A. Discrimination of the texture of an object
B. Discrimination of the shape of an object
C. Stereognosis
D. Both A and B
E. A, B, and C
ANS: D
Rationale: The primary somatosensory cortex allows for the discrimination of the size, texture, and shape of objects, whereas the thalamus provides stereognosis and memory of the tactile and spatial environment.
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