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

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Abstract

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.

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Authors and Affiliations

  1. Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia

    I. M. Zavalko, Ya. S. Boritko, A. G. Vinokhodova, A. I. Chekalina & A. E. Smoleevsky

  2. Sechenov First Moscow State Medical University, Moscow, Russia

    G. V. Kovrov

Authors
  1. I. M. Zavalko
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  2. Ya. S. Boritko
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  3. G. V. Kovrov
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  4. A. G. Vinokhodova
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  5. A. I. Chekalina
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  6. A. E. Smoleevsky
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Correspondence to I. M. Zavalko.

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Original Russian Text © I.M. Zavalko, Ya.S. Boritko, G.V. Kovrov, A.G. Vinokhodova, A.I. Chekalina, A.E. Smoleevsky, 2014, published in Aviakosmicheskaya i Ekologicheskaya Meditsina, 2014, Vol. 48, No. 1, pp. 27–39.

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Zavalko, I.M., Boritko, Y.S., Kovrov, G.V. et al. Night sleep structural alteration as a function of individual strategy of adapting to 520-day isolation. Hum Physiol 42, 766–776 (2016). https://doi.org/10.1134/S0362119716070215

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  • DOI: https://doi.org/10.1134/S0362119716070215

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