Pre-sleep cognitive activity in adults: A systematic review

Alexandre Lemyre¹, Florence Belzile¹, Madeleine Landry¹, Célyne H Bastien², Luc P Beaudoin³

Affiliations

¹ School of Psychology, Université Laval, Québec, QC, Canada.
² School of Psychology, Université Laval, Québec, QC, Canada; Research Laboratory on Human Neurophysiology and Sleep, Université Laval, Québec, QC, Canada; CERVO Brain Research Center, Québec, QC, Canada.
³ Faculty of Education and Cognitive Science, Simon Fraser University, Vancouver, BC, Canada. Electronic address: lpb@sfu.ca.

PMID: 31918338
DOI: 10.1016/j.smrv.2019.101253

Pre-sleep cognitive activity in adults: A systematic review

Alexandre Lemyre et al. Sleep Med Rev. 2020 Apr.

. 2020 Apr:50:101253.

doi: 10.1016/j.smrv.2019.101253. Epub 2019 Dec 17.

Authors

Alexandre Lemyre¹, Florence Belzile¹, Madeleine Landry¹, Célyne H Bastien², Luc P Beaudoin³

Affiliations

¹ School of Psychology, Université Laval, Québec, QC, Canada.
² School of Psychology, Université Laval, Québec, QC, Canada; Research Laboratory on Human Neurophysiology and Sleep, Université Laval, Québec, QC, Canada; CERVO Brain Research Center, Québec, QC, Canada.
³ Faculty of Education and Cognitive Science, Simon Fraser University, Vancouver, BC, Canada. Electronic address: lpb@sfu.ca.

PMID: 31918338
DOI: 10.1016/j.smrv.2019.101253

Abstract

This systematic review focuses on three themes: 1) the nature of pre-sleep cognitive activity in good sleepers and individuals with insomnia, 2) the links between measures of pre-sleep cognitive activity and sleep onset latency (SOL) or insomnia, and 3) the effect of manipulating pre-sleep cognitive activity on SOL or insomnia. Regarding the first theme, mentation reports have been collected in a sleep laboratory, with an ambulatory monitoring device, or using a voice-activated tape-recorder. Normal transition to sleep is characterized by sensorial imagery, deactivation of higher cognitive processes, and hallucinations. Moreover, pre-sleep thoughts in individuals with insomnia frequently relate to planning or problem-solving, and are more unpleasant than in good sleepers. Regarding the second theme, twelve questionnaires and three interviews were identified. Insomnia is associated with more thoughts interfering with sleep, counterfactual processing, worries, maladaptive thought control strategies, covert monitoring, and cognitive arousal. Regarding the third theme, several strategies have been tested: mental imagery, hypnosis, paradoxical intention, articulatory suppression, ordinary suppression, and distraction. Their effect is either beneficial, negligible, or detrimental. Future research should focus on the mechanisms through which some forms of cognitive activity affect sleep onset latency.

Keywords: Cognitive activity; Insomnia; Sleep onset; Systematic review.

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Conflict of interest statement

Conflicts of interest Luc P. Beaudoin: Director of CogSci Apps Corp. and owner of CogZest. Both of these Canadian businesses develop products based on his affective/cognitive science research. These include books, software, and training services. Other authors: The authors declare having no conflict of interest.

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Pre-sleep cognitive activity in adults: A systematic review

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Pre-sleep cognitive activity in adults: A systematic review

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Conflict of interest statement

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