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Public Library of Science, PLoS ONE, 2(9), p. e88307, 2014

DOI: 10.1371/journal.pone.0088307

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Time, Not Sleep, Unbinds Contexts from Item Memory

Journal article published in 2014 by Roy Cox ORCID, Ron R. Tijdens, Martijn M. Meeter, Carly C. G. Sweegers, Lucia M. Talamini
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Contextual cues are known to benefit memory retrieval, but whether and how sleep affects this context effect remains unresolved. We manipulated contextual congruence during memory retrieval in human volunteers across 12 h and 24 h intervals beginning with either sleep or wakefulness. Our data suggest that whereas contextual cues lose their potency with time, sleep does not modulate this process. Furthermore, our results are consistent with the idea that sleep's beneficial effect on memory retention depends on the amount of waking time that has passed between encoding and sleep onset. The findings are discussed in the framework of competitive consolidation theory.