Psychomotor vigilance task performance during and following chronic sleep restriction in rats

Samuel Deurveilher, Jacquelyn E. Bush, Benjamin Rusak, Gail A. Eskes, Kazue Semba

Résultat de recherche: Articleexamen par les pairs

29 Citations (Scopus)

Résumé

Study Objectives: Chronic sleep restriction (CSR) impairs sustained attention in humans, as commonly assessed with the psychomotor vigilance task (PVT). To further investigate the mechanisms underlying performance deficits during CSR, we examined the effect of CSR on performance on a rat version of PVT (rPVT). Design: Adult male rats were trained on a rPVT that required them to press a bar when they detected irregularly presented, brief light stimuli, and were then tested during CSR. CSR consisted of 100 or 148 h of continuous cycles of 3-h sleep deprivation (using slowly rotating wheels) alternating with a 1-h sleep opportunity (3/1 protocol). Measurements and Results: After 28 h of CSR, the latency of correct responses and the percentages of lapses and omissions increased, whereas the percentage of correct responses decreased. Over 52-148 h of CSR, all performance measures showed partial or nearly complete recovery, and were at baseline levels on the first or second day after CSR. There were large interindividual differences in the magnitude of performance impairment during CSR, suggesting differential vulnerability to the effects of sleep loss. Wheel-running controls showed no changes in performance. Conclusions: A 28-h period of the 3/1 chronic sleep restriction (CSR) protocol disrupted performance on a sustained attention task in rats, as sleep deprivation does in humans. Performance improved after longer periods of CSR, suggesting allostatic adaptation, contrary to some reports of progressive deterioration in psychomotor vigilance task performance during CSR in humans. However, as observed in humans, there were individual differences among rats in the vulnerability of their attention performance to CSR.

Langue d'origineEnglish
Pages (de-à)515-528
Nombre de pages14
JournalSleep
Volume38
Numéro de publication4
DOI
Statut de publicationPublished - avr. 1 2015

ASJC Scopus Subject Areas

  • Clinical Neurology
  • Physiology (medical)

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't

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