Journal
LEARNING & MEMORY
Volume 29, Issue 1, Pages 1-6Publisher
COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
DOI: 10.1101/lm.053482.121
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- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, Brazil)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES, Brazil)
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The destabilization of hippocampal dopamine D1/D5 receptor is necessary for object recognition memory (ORM) updating through reconsolidation. Hippocampal theta-gamma coupling (hPAC) controls ORM destabilization, and its modulation could increase the efficacy of reconsolidation-based psychotherapy.
Hippocampal dopamine D1/D5 receptor-dependent destabilization is necessary for object recognition memory (ORM) updating through reconsolidation. Dopamine also regulates hippocampal theta and gamma oscillations, which are involved in novelty and memory processing. We found that, in adult male rats, ORM recall in the presence of a novel object, but not in the presence of a familiar one, triggers hippocampal theta-gamma coupling. Hippocampal theta-gamma coupling (hPAC) does not happen when ORM destabilization is prevented by blocking D1/D5 receptors, but artificial hPAC generation during recall in the presence of a familiar object enables the amnesic effect of reconsolidation inhibitors. Therefore, hPAC controls ORM destabilization, and its modulation could increase reconsolidation-based psychotherapy efficacy.
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