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Error-driven upregulation of memory representations.
Commun Psychol
January 2025
Institute of Psychology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
Learning an association does not always succeed on the first attempt. Previous studies associated increased error signals in posterior medial frontal cortex with improved memory formation. However, the neurophysiological mechanisms that facilitate post-error learning remain poorly understood.
View Article and Find Full Text PDFAmygdalo-cortical dialogue underlies memory enhancement by emotional association.
Neuron
January 2025
Laboratory for Haptic Perception and Cognitive Physiology, RIKEN Center for Brain Science, Wako-shi 351-0198, Saitama, Japan; RIKEN CBS-Kao Collaboration Center (BKCC), Wako-shi 351-0198, Saitama, Japan. Electronic address:
Emotional arousal plays a critical role in determining what is remembered from experiences. It is hypothesized that activation of the amygdala by emotional stimuli enhances memory consolidation in its downstream brain regions. However, the physiological basis of the inter-regional interaction and its functions remain unclear.
View Article and Find Full Text PDFHippocampal 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.
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