JLE

Revue de neuropsychologie

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Sleep and memory consolidation Volume 5, issue 4, Octobre-Novembre-Décembre 2013

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Authors
Inserm, U1077, Caen, France, Université de Caen Basse-Normandie, UMR-S1077, Caen, France, École pratique des hautes études, UMR-S1077, Caen, France, CHU de Caen, U1077, Caen, France, CHU de Caen, service des explorations fonctionnelles neurologiques, Caen, France

A large body of evidence indicates that sleep favors the consolidation of recently-acquired information into long-term memory. In this paper, we review studies investigating the relationships between sleep and memory, using various experimental approaches (sleep deprivation, functional neuroimaging…). These studies revelaed the neurobiological substrates subserving the beneficial effect of sleep on memory and contributed to the proposal of two models: the hippocampo-neocortical dialogue and the synaptic homeostasis hypothesis (or synaptic downscaling). These two models are described and we report some experimental evidence underpinning each hypothesis.