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Hippocampal DNA methylation promotes contextual fear memory persistence by facilitating systems consolidation and cortical engram stabilization.
Biol Psychiatry
January 2025
Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, 69120 Heidelberg, Germany; Department of Molecular and Cellular Cognition Research, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, 68159 Mannheim, Germany. Electronic address:
Background: Long-term fear memory storage involves gradual reorganization of supporting brain regions over time, a process termed systems consolidation. Memories initially rely on the hippocampus but gradually shift dependence to the neocortex. Although hippocampal activity drives this transfer, the molecular basis of systems consolidation is largely unknown.
View Article and Find Full Text PDFPost-retrieval noradrenergic activation impairs subsequent memory depending on cortico-hippocampal reactivation.
Elife
January 2025
Department of Cognitive Psychology, University of Hamburg, Hamburg, Germany.
When retrieved, seemingly stable memories can become sensitive to significant events, such as acute stress. The mechanisms underlying these memory dynamics remain poorly understood. Here, we show that noradrenergic stimulation after memory retrieval impairs subsequent remembering, depending on hippocampal and cortical signals emerging during retrieval.
View Article and Find Full Text PDFRemembering Dana Birksted-Breen.
Int J Psychoanal
December 2024
Institute of Psychoanalysis, London, England.
Eye Movement and Recall of Visual Elements in Eco-friendly Product.
J Eye Mov Res
December 2024
Department of Marine Design Convergence Engineering, Pukyong National University, Korea.
This study aims to explore the distribution of visual attention on sustainability graphics when viewing an eco-friendly product and the recall of sustainability information afterward. Twenty-five students majoring in environmental studies and twenty-five students from non-environmental majors participated in the study. They were further divided into a higher group and a lower group based on their sustainability level.
View Article and Find Full Text PDFThe impact of temporal distribution on fear extinction learning.
Int J Clin Health Psychol
January 2025
Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany.
Fear extinction is the foundation of exposure therapy for anxiety and phobias. However, the stability of extinction memory diminishes over time, coinciding with fear recovery. To augment long-term extinction retention, the temporal distribution of extinction learning sessions is critical.
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