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Moon To Mars
NEEMO 13 aquanaut, astronaut Richard Arnold, performs the Psychomotor Vigilance Test
(PVT), 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.
Credit: National Space Biomedical Research Institute


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