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Does Sleep Really Influence Face Recognition Memory?

Sheth, Bhavin R. and Nguyen, Ngan and Janvelyan, Davit (2009) Does Sleep Really Influence Face Recognition Memory? PLoS ONE, 4 (5). Art. No. e5496. ISSN 1932-6203. PMCID PMC2674564.

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Mounting evidence implicates sleep in the consolidation of various kinds of memories. We investigated the effect of sleep on memory for face identity, a declarative form of memory that is indispensable for nearly all social interaction. In the acquisition phase, observers viewed faces that they were required to remember over a variable retention period (0–36 hours). In the test phase, observers viewed intermixed old and new faces and judged seeing each before. Participants were classified according to acquisition and test times into seven groups. Memory strength (d′) and response bias (c) were evaluated. Substantial time spent awake (12 hours or more) during the retention period impaired face recognition memory evaluated at test, whereas sleep per se during the retention period did little to enhance the memory. Wakefulness during retention also led to a tightening of the decision criterion. Our findings suggest that sleep passively and transiently shelters face recognition memory from waking interference (exposure) but does not actively aid in its long-term consolidation.

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Additional Information:This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. Received: January 10, 2009; Accepted: April 15, 2009; Published: May 8, 2009. We thank Saumil Patel and Daw-An Wu for reviewing earlier versions of our manuscript and their insightful criticism. We are indebted to the volunteers in our study and to the two anonymous reviewers for their constructive remarks. Author Contributions: Conceived and designed the experiments: BRS. Performed the experiments: NN DJ. Analyzed the data: BRS NN. Wrote the paper: BRS. The work was supported in part by funds from the University of Houston and a Cline Discovery grant (Caltech) to BRS. DJ was supported by a SURF undergraduate fellowship through Jet Propulsion Laboratory and Caltech. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Competing interests: The authors have declared that no competing interests exist.
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University of HoustonUNSPECIFIED
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Issue or Number:5
PubMed Central ID:PMC2674564
Record Number:CaltechAUTHORS:20200218-151249315
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Official Citation:Sheth BR, Nguyen N, Janvelyan D (2009) Does Sleep Really Influence Face Recognition Memory? PLoS ONE 4(5): e5496.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101343
Deposited By: George Porter
Deposited On:19 Feb 2020 19:29
Last Modified:19 Feb 2020 19:29

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