Sleep slow oscillation and plasticity

Authors: Timofeev, IgorChauvette, Sylvain
Abstract: It is well documented that sleep contributes to memory consolidation and it is also accepted that long-term synaptic plasticity plays a critical role in memory formation. The mechanisms of this sleep-dependent memory formation are unclear. Two main hypotheses are proposed. According to the first one, synapses are potentiated during wake; and during sleep they are scaled back to become available for the learning tasks in the next day. The other hypothesis is that sleep slow oscillations potentiate synapses that were depressed due to persistent activities during the previous day and that potentiation provides physiological basis for memory consolidation. The objective of this review is to group information on whether cortical synapses are up-scaled or down-scaled during sleep. We conclude that the majority of cortical synapses are up-regulated by sleep slow oscillation.
Document Type: Article de recherche
Issue Date: 26 April 2017
Open Access Date: 9 May 2017
Document version: VoR
This document was published in: Current Opinion in Neurobiology, Vol. 44, 116-126 (2017)
Current Biology
Alternative version: 10.1016/j.conb.2017.03.019
Collection:Articles publiés dans des revues avec comité de lecture

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