Dataset Information

Local sleep-like events during wakefulness and their relationship to decreased alertness in astronauts on ISS.

ABSTRACT: Adequate sleep quantity and quality is required to maintain vigilance, cognitive and learning processes. A decrease of sleep quantity preflight and on the International Space Station (ISS) has been reported. Recent counter-measures have been implemented to better regulate sleep opportunities on ISS. In our study, astronauts were allocated enough time for sleep the night before the recordings. However, for proper sleep recovery, the quality of sleep is also critical. Unfortunately, data on sleep quality have yet to be acquired from the ISS. Here, we investigate sleep pressure markers during wakefulness in five astronauts throughout their 6-month space mission by the mean of electroencephalographic recordings. We show a global increase of theta oscillations (5-7?Hz) on the ISS compared to on Earth before the mission. We also show that local sleep-like events, another marker of sleep pressure, are more global in space (p?R ²?=?0.03, p?=?0.006) and there is an increase of reaction times above 244?ms after 2 months in space (p?=?0.012). Our analyses provide first evidence for increased sleep pressure in space and raise awareness on possible impacts on visuomotor performances in space.

SUBMITTER: Petit G

PROVIDER: S-EPMC6497715 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Local sleep-like events during wakefulness and their relationship to decreased alertness in astronauts on ISS.

Petit Gaetan G Cebolla Ana Maria AM Fattinger Sara S Petieau Mathieu M Summerer Leopold L Cheron Guy G Huber Reto R

NPJ microgravity 20190502

Adequate sleep quantity and quality is required to maintain vigilance, cognitive and learning processes. A decrease of sleep quantity preflight and on the International Space Station (ISS) has been reported. Recent counter-measures have been implemented to better regulate sleep opportunities on ISS. In our study, astronauts were allocated enough time for sleep the night before the recordings. However, for proper sleep recovery, the quality of sleep is also critical. Unfortunately, data on sleep ...[more]

PMID: 31069253

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Dataset Information

Local sleep-like events during wakefulness and their relationship to decreased alertness in astronauts on ISS.

Publications

Local sleep-like events during wakefulness and their relationship to decreased alertness in astronauts on ISS.

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