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Physiology · Neurophysiology: memory
Sample itemAfter bilateral medial temporal lobe resection for epilepsy, a man cannot form new long-term declarative memories but recalls his childhood and can learn new motor skills. Which structure is mainly responsible?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Hippocampus
The hippocampus is required for consolidation of new declarative (explicit) memory, so its loss causes anterograde amnesia. Remote memories are stored in the cortex, and procedural learning relies on the basal ganglia and cerebellum, which remain intact. Short-term working memory also remains.
Option by option
A. Hippocampus (correct)
Correct. Hippocampal damage impairs consolidation of new explicit memories.
B. Cerebellum
The cerebellum is concerned with motor learning, which is preserved here.
C. Amygdala
The amygdala is concerned with emotional memory and fear conditioning.
D. Prefrontal cortex
The prefrontal cortex supports working memory, which is spared.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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