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Article Dans Une Revue Philosophical Transactions of the Royal Society B: Biological Sciences Année : 2019

A Sleep Spindle Framework for Motor Memory Consolidation

Résumé

Sleep spindle activity has repeatedly been found to contribute to brain plasticity and consolidation of both declarative and procedural memories. Here we propose a framework for motor memory consolidation that outlines the essential contribution of the hierarchical and multi-scale periodicity of spindle activity, as well as of the synchronization and interaction of brain oscillations during this sleep-dependent process. We posit that the clustering of sleep spindles in "trains", together with the temporally organized alternation between spindles and associated refractory periods, are critical for efficient reprocessing and consolidation of motor memories. We further argue that the long-term retention of procedural memories relies on the synchronized (functional connectivity) local reprocessing of new information across segregated, but interconnected brain regions that are involved in the initial learning process. Finally, we propose that oscillatory synchrony in the spindle frequency band may reflect the cross-structural reactivation, reorganization and consolidation of motor, and potentially declarative, memory traces within broader subcortical-cortical networks during sleep.
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hal-02424109 , version 1 (26-12-2019)

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Arnaud Boutin, Julien Doyon. A Sleep Spindle Framework for Motor Memory Consolidation. Philosophical Transactions of the Royal Society B: Biological Sciences, 2019, ⟨10.1098/rstb.2019.0232⟩. ⟨hal-02424109⟩
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