Open AccessEffects of different sleep restriction protocols on sleep architecture and daytime vigilance in healthy men
Author(s) -
Huijuan Wu,
William S. Stone,
X Hsi,
Jianhua Zhuang,
Lie-Jun Huang,
You Yin,
L Zhang,
Zichen Zhao
Publication year - 2010
Publication title -
physiological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.647
H-Index - 70
eISSN - 1802-9973
pISSN - 0862-8408
DOI - 10.33549/physiolres.931895
Subject(s) - sleep restriction , vigilance (psychology) , sleep deprivation , psychomotor vigilance task , sleep (system call) , sleep debt , psychology , circadian rhythm , sleep stages , audiology , slow wave sleep , sleep onset , non rapid eye movement sleep , medicine , eye movement , insomnia , electroencephalography , polysomnography , neuroscience , psychiatry , computer science , operating system
Sleep is regulated by complex biological systems andenvironmental influences, neither of which is fully clarified. Thisstudy demonstrates differential effects of partial sleep deprivation(SD) on sleep architecture and psychomotor vigilance task (PVT)performance using two different protocols (sequentially) thateach restricted daily sleep to 3 hours in healthy adult men. Theprotocols differed only in the period of sleep restriction; in one,sleep was restricted to a 3-hour block from 12:00 AM to 3:00 AM,and in the other, sleep was restricted to a block from 3:00 AM to6:00 AM. Subjects in the earlier sleep restriction period showed asignificantly lower percentage of rapid-eye-movement (REM)sleep after 4 days (17.0 vs. 25.7 %) and a longer latency to theonset of REM sleep (L-REM) after 1 day (78.8 vs. 45.5 min) thanthey did in the later sleep restriction period. Reaction times onPVT performance were also better (i.e. shorter) in the earlier SRperiod on day 4 (249.8 vs. 272 ms). These data support the viewthat earlier-night sleep may be more beneficial for daytimevigilance than later-night sleep. The study also showed thatcumulative declines in daytime vigilance resulted from loss oftotal sleep time, rather than from specific stages, andunderscored the reversibility of SR effects with greater amountsof sleep.