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Hippocampus
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Composed of the dentate gyrus and cornu ammonis regions
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Part of limbic system
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Limbic system function: cooperation in learning,
consolidation and retrieval of information; essential for
formation of new memories
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Bilateral and unilateral radiation injury of the hippocampus
alters learning and memory formation
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Mean doses of >45G to left temporal lobe associated with
significant declines in longitudinal IQ