Hippocampal involvement in working memory following refreshing.

Autor:	Rose NS; Department of Psychology, University of Notre Dame, Notre Dame, IN, USA., Chao CM; Department of Psychology, University of Notre Dame, Notre Dame, IN, USA.
Jazyk:	angličtina
Zdroj:	Cognitive neuroscience [Cogn Neurosci] 2022 Jul; Vol. 13 (3-4), pp. 215-217. Date of Electronic Publication: 2022 Oct 11.
DOI:	10.1080/17588928.2022.2131749
Abstrakt:	Working memory (WM) and long-term memory (LTM) tests have both overlapping and distinct neurocognitive processes. Hippocampal activity in fMRI studies-a hallmark of LTM-also occurs on WM tasks, typically during encoding or retrieval and sometimes (albeit rarely) through 'late-delay' periods. The Synaptic Theory of WM suggests that 'activity-silent' synaptic weights retain temporary, WM-relevant codes without sustained, elevated activity. The hippocampus temporarily retains item-context bindings during WM-delays that are typically 'silent' to fMRI, probably via oscillatory patterns of informational connectivity among task-relevant regions of cortex. Advancing WM theory will require modeling this dynamic interplay, as in the 'Dynamic Processing Model of WM.
Databáze:	MEDLINE
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