Влияние длительной изоляции и ожидания значимого события на сон человека: результаты проекта «Марс-520»
The purpose of the research was to study effect of longterm isolation on night sleep. The data were collected during international ground simulation of an interplanetary manned flight – “Mars500”. The polysomno graphic recordings of six healthy men were performed before, four times during and after 520days confine ment. During the isolation sleep efficiency and deltalatency decreased, while sleep latency increased. Post hoc analysis demonstrate significant differences between background and the last (1.5 months before the end of the experiment) measure during isolation. Frequency of nights with low sleep efficiency rose on the eve of the important for the crew events (simulation of Mars landing and the end of the confinement). Two weeks after the landing simulation, amount of the nights with a low sleep efficiency significantly decreased. There fore, anticipation of significant event under condition of longterm isolation might result in sleep worsening in previously healthy men, predominantly difficulties getting to sleep.