Emotional Arousal Impairs Association Memory: Roles of Prefrontal Cortex Regions
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The brain processes underlying impairing effects of emotional arousal on associative memory were previously attributed to two dissociable routes using high-resolution fMRI of the MTL (Madan et al. 2017). Extrahippocampal MTL regions supporting associative encoding of neutral pairs suggested unitization; conversely, associative encoding of negative pairs involved compensatory hippocampal activity. Here, whole-brain fMRI revealed prefrontal contributions: dmPFC was more involved in hippocampal-dependent negative pair learning and vmPFC in extrahippocampal neutral pair learning. Successful encoding of emotional memory associations may require emotion regulation/conflict resolution (dmPFC), while neutral memory associations may be accomplished by anchoring new information to prior knowledge (vmPFC).
Effects of acute exercise on emotional memory.
Loprinzi P, Olafson D, Scavuzzo C, Lovorn A, Mather M, Frith E Cogn Emot. 2022; 36(4):660-689.
PMID: 35293844 PMC: 10278038. DOI: 10.1080/02699931.2022.2050890.