Effects of acute and chronic sleep deprivation on daytime alertness and cognitive performance of healthy snorers and non-snorers.
Sleep Medicine. 2012-01-01; 13(1): 29-35
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1. Sleep Med. 2012 Jan;13(1):29-35. doi: 10.1016/j.sleep.2011.06.017. Epub 2011 Dec
Effects of acute and chronic sleep deprivation on daytime alertness and cognitive
performance of healthy snorers and non-snorers.
Tassi P(1), Schimchowitsch S, Rohmer O, Elbaz M, Bonnefond A, Sagaspe P, Taillard
J, Léger D, Philip P.
(1)Laboratoire de Psychologie des Cognitions, Université de Strasbourg, France.
BACKGROUND: Respiratory events during sleep usually lead to micro arousals
resulting in consecutive daytime sleepiness even in healthy snorers. The present
study investigated the evolution of subjective and objective daytime sleepiness
and reaction time in healthy snorers submitted to acute and chronic sleep
METHODS: Objective sleepiness was measured by the MSLT, subjective sleepiness by
the Karolinska Sleepiness Scale (KSS), and reaction time (RT) by the Psychomotor
Vigilance Test. Mean sleep latencies, KSS scores and performance were analyzed
through repeated measures ANOVAs with one between-factor (snorers and
non-snorers) and two within-factors (sleep deprivation [baseline, acute, and
chronic sleep deprivation] and time-of-day).
RESULTS: The findings reveal that sleep deprivation does not enhance snoring but
that, during baseline, objective daytime sleepiness is higher in snorers than in
non-snorers (shorter sleep latencies) with no difference in subjective
assessments. The effects of acute and chronic sleep deprivation on sleep are
similar in both groups, but, after acute sleep deprivation, RT and attentional
lapses (RT >500 ms) are higher in snorers. Chronic sleep deprivation produces
similar results in both groups.
CONCLUSION: These results suggest that respiratory efforts may be involved in the
increased vulnerability to sleep deprivation of healthy snorers when compared to
Copyright © 2011 Elsevier B.V. All rights reserved.
PMID: 22177345 [Indexed for MEDLINE]