title: Sleep in space.
abstract: Manned space flights have shown it is possible to sleep in microgravity. However, some sleep disturbances have been reported which influence performance of the crew and safety of space flight. This paper reviews the main studies of in-flight sleep in animal and man. Most disturbances are related to phase lags due to operational requirements. Factors which can disturb in-flight sleep are analysed: environmental factors. Some of them are secondary to space flight ergonomics. Conversely, effects of microgravity on light-dark alternance are less known and lead to interesting problems of fundamental research, psychological factors, especially during long duration flights.
authors.affiliation: MEDES, Hotel-Dieu, Toulouse, France.
authors.forename: A
authors.initials: A
authors.lastname: Pavy Le-Traon
authors.forename: B
authors.initials: B
authors.lastname: Roussel
mesh_terms: D000337:Aerospace Medicine; D000818:Animals; D018480:Astronauts / Q000523:psychology; D001569:Benzodiazepines / Q000627:therapeutic use; D002940:Circadian Rhythm; D004569:Electroencephalography; D006804:Ergonomics; D006801:Humans; D012890:Sleep / Q000502:physiology*; D012892:Sleep Deprivation; D012893:Sleep Wake Disorders / Q000188:drug therapy / Q000209:etiology / Q000517:prevention & control*; D013026:Space Flight; D014586:USSR; D014481:United States; D014893:Weightlessness; D014940:Work Schedule Tolerance
chemical_list: D001569:Benzodiazepines