If a patient is unable to button a shirt despite intact sensation, motor control, and understanding of the task, where is the most likely location of a lesion?
A. Wernicke's area
B. Hippocampus, Wernicke's area, or Broca's area
C. Secondary somatosensory cortex
D. Premotor or supplementary motor areas
ANS: D
Rationale: Apraxia can be considered motor agnosia; the knowledge of how to perform skilled movement is lost. Apraxia occurs as a result of damage to the premotor or supplementary motor areas of the inferior parietal lobe.
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