The alteration of human sleep and circadian rhythms during spaceflight.

  title={The alteration of human sleep and circadian rhythms during spaceflight.},
  author={Alexander Gundel and Valery V Polyakov and Juergen Zulley},
  journal={Journal of sleep research},
  volume={6 1},
Numerous anecdotes in the past suggest the concept that sleep disturbances in astronauts occur more frequently during spaceflight than on ground. Such disturbances may be caused in part by exogenous factors, but also an altered physiological state under microgravity may add to reducing sleep quality in a spacecraft. The present investigation aims at a better understanding of possible sleep disturbances under microgravity. For the first time, experiments were conducted in which sleep and… CONTINUE READING


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