Contact: Kathy Major
major@bcm.edu
713-798-5893
National Space Biomedical Research Institute

Previous Mission Aquanaut With PVT Device

Caption: During NEEMO 12, veteran astronaut Heidemarie Stefanyshyn-Piper is shown with a Psychomotor Vigilance Test device. Also visible on the table is a clear bag for the daily saliva samples, which are used to measure cortisol, a hormone that provides information on stress levels.

Credit: NASA

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