Aquanaut Taking Psychomotor Vigilance Test (IMAGE)

National Space Biomedical Research Institute

Aquanaut Taking Psychomotor Vigilance Test

Caption

NEEMO 13 aquanaut, astronaut Richard Arnold, performs the Psychomotor Vigilance Test, a three-minute test which measures vigilance, attention and psychomotor speed. The PVT is taken at least four times a day -- on waking, before and after simulated moon walks, dives and habitat experiments, and before bed.

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NASA

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