Hippocampal ensembles regulate circuit-induced relapse of extinguished fear
Hassell J, Arellano Perez A, Vasudevan K, Ressler R, Garcia G, Parr M, Vierkant V, Bayer H, Maren S. Hippocampal ensembles regulate circuit-induced relapse of extinguished fear. Molecular Psychiatry 2025, 30: 4700-4709. PMID: 40413310, PMCID: PMC12436148, DOI: 10.1038/s41380-025-03064-3.Peer-Reviewed Original ResearchPost-traumatic stress disorderContextual fear memoryFear memoryExtinction learningFear conditioningConditioned stimulusExcitatory DREADDsFormation of contextual fear memoryChemogenetic reactivationRelapse of fearAuditory conditioned stimulusIntra-hippocampal infusionThalamic nucleus reuniensAuditory fear conditioningNMDA receptor antagonistExtinguished CSBehavioral therapyStress disorderNucleus reuniensHippocampal ensemblesReuniensReceptor antagonistHPC neuronsMemoryDREADDs
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