title: Effects of acute and chronic sleep deprivation on daytime alertness and cognitive performance of healthy snorers and non-snorers.
abstract: 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 deprivation.
  
  
  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.
  
  
  CONCLUSIONS
  These results suggest that respiratory efforts may be involved in the increased vulnerability to sleep deprivation of healthy snorers when compared to non-snorers.
authors.affiliation: Laboratoire de Psychologie des Cognitions, Université de Strasbourg, France. patricia.tassi@unistra.fr
authors.forename: Patricia
authors.initials: P
authors.lastname: Tassi
authors.forename: Sarah
authors.initials: S
authors.lastname: Schimchowitsch
authors.forename: Odile
authors.initials: O
authors.lastname: Rohmer
authors.forename: Maxime
authors.initials: M
authors.lastname: Elbaz
authors.forename: Anne
authors.initials: A
authors.lastname: Bonnefond
authors.forename: Patricia
authors.initials: P
authors.lastname: Sagaspe
authors.forename: Jacques
authors.initials: J
authors.lastname: Taillard
authors.forename: Damien
authors.initials: D
authors.lastname: Léger
authors.forename: Pierre
authors.initials: P
authors.lastname: Philip
mesh_terms: D000328:Adult; D001143:Arousal / Q000502:physiology; D001288:Attention / Q000502:physiology*; D016022:Case-Control Studies; D003071:Cognition / Q000502:physiology; D006801:Humans; D008297:Male; D017286:Polysomnography; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D012892:Sleep Deprivation / Q000503:physiopathology / Q000523:psychology*; D012913:Snoring / Q000503:physiopathology / Q000523:psychology*; D055815:Young Adult