ERIC Number: EJ916958
Record Type: Journal
Publication Date: 2011-Mar
Abstractor: As Provided
Reference Count: 0
Repeatedly Reactivated Memories Become More Resistant to Hippocampal Damage
Lehmann, Hugo; McNamara, Kathryn C.
Learning & Memory, v18 n3 p132-135 Mar 2011
We examined whether repeated reactivations of a context memory would prevent the typical amnesic effects of post-training damage to the hippocampus (HPC). Rats were given a single contextual fear-conditioning session followed by 10 reactivations, involving a brief return to the conditioning context (no shock). Subsequently, the rats received sham or complete lesions of the HPC. When tested for retention, the HPC rats that experienced the reactivations froze significantly more than nonreactivation HPC rats and did not significantly differ from their respective control group. These findings suggest that memory reactivations contribute to long-term memories becoming independent of the HPC.
Descriptors: Control Groups, Context Effect, Conditioning, Memory, Neurological Impairments, Brain, Animals, Fear, Retention (Psychology), Testing, Brain Hemisphere Functions
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A