ERIC Number: EJ1027232
Record Type: Journal
Publication Date: 2014-Jan
Abstractor: As Provided
Reference Count: N/A
Memory Destabilization Is Critical for the Success of the Reactivation-Extinction Procedure
Piñeyro, Marcelo E.; Monti, Roque I. Ferrer; Alfei, Joaquín M.; Bueno, Adrián M.; Urcelay, Gonzalo P.
Learning & Memory, v21 n1 p46-54 Jan 2014
It has been suggested that, unlike pure extinction which typically results in the return of the fear response under a variety of circumstances, memory reactivation followed by extinction can attenuate the reemergence of conditioned fear. The reactivation-extinction procedure has attracted the attention of basic and clinical researchers due to its potential clinical value for the treatment of psychiatric conditions, such as anxiety and drug abuse disorders. However, mixed results have been achieved so far in replicating and understanding this paradigm. It has been proposed that memory destabilization could be critical in this sense. Using contextual fear conditioning in rats and midazolam as an amnesic agent, we first determined what reactivation conditions are necessary to destabilize the mnemonic trace. After establishing the conditions for memory destabilization, a series of experiments was conducted to determine if destabilization is critical for the success of the reactivation-extinction procedure. Data confirmed the importance of memory destabilization prior to extinction inside the reconsolidation window to attenuate spontaneous recovery and retard reacquisition of conditioned fear. The present report offers a candidate explanation of the discrepancy in results obtained with the reactivation-extinction procedure by different laboratories.
Descriptors: Memory, Fear, Responses, Conditioning, Animals, Drug Use, Experiments, Learning Processes
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A