title: [Night sleep structural alteration as a function of individual strategy of adapting to 520-isolation].
abstract: Purpose of the work was to establish a relationship between trends in sleep alteration and individual adaptation to the stress-factors in the 520-day isolation study. Psychological evaluations using a battery of motivation tests and L. Sobchik's modification of the Luscher personality test, and Mirror coordinograph enabled to differentiate groups reacting to the stress on the pattern of "control" (G-1) or "search" (G-2) manifested in individual styles of behavior and operator's activity. The 2 groups showed different dynamics of the night sleep structure. Difficulties with falling asleep in G-1 arose on the eve of "landing onto Mars" and end of the experiment, whereas in G-2 they were evident prior to the end only. Besides, the micro- and segmental sleep structures were more stable in G-1 suggesting the integrity of somnogenic mechanisms despite difficult sleep initiation.
authors.forename: I M
authors.initials: IM
authors.lastname: Zavalko
authors.forename: Ya S
authors.initials: YS
authors.lastname: Boritko
authors.forename: G V
authors.initials: GV
authors.lastname: Kovrov
authors.forename: A G
authors.initials: AG
authors.lastname: Vinokhodova
authors.forename: A I
authors.initials: AI
authors.lastname: Chekalina
authors.forename: A E
authors.initials: AE
authors.lastname: Smoleevsky
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology*; D006801:Humans; D017286:Polysomnography; D012890:Sleep / Q000502:physiology*; D012934:Social Isolation; D018561:Space Simulation; D013315:Stress, Psychological / Q000378:metabolism*; D013997:Time Factors