Night sleep structural alteration as a function of individual strategy of adapting to 520-day isolation

The purpose of the study was to establish a relationship between trends in sleep alteration and individual adaptation to stress factors in the 520-day isolation study. Psychological evaluations using a battery of motivation tests, Sobchik’s modification of the Luscher personality test, and Mirror co...

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Bibliographic Details
Published in:Human physiology 2016-12, Vol.42 (7), p.766-776
Main Authors: Zavalko, I. M., Boritko, Ya. S., Kovrov, G. V., Vinokhodova, A. G., Chekalina, A. I., Smoleevsky, A. E.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biomedicine
Experimental and Theoretical Studies
Human Physiology
Life Sciences
Motivation
Personality
Psychological assessment
Sleep
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Summary:The purpose of the study was to establish a relationship between trends in sleep alteration and individual adaptation to stress factors in the 520-day isolation study. Psychological evaluations using a battery of motivation tests, Sobchik’s modification of the Luscher personality test, and Mirror coordinograph made it possible to differentiate groups responding to the stress according to the pattern “control” (G-1) or “search” (G-2) manifested in individual styles of behavior and operator’s activity. The two groups exhibited 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. In addition, the micro- and segmental sleep structures were more stable in G-1, suggesting the integrity of somnogenic mechanisms despite difficult sleep initiation.
ISSN:0362-1197
1608-3164
DOI:10.1134/S0362119716070215