Task Psychomotor Vigilance Test (PVT) on ISS (Completed)
Last Published:  07/31/19 10:05:33 AM (Central)
Short Title: Reaction Self Test (Cognitive Performance/PVT)
Responsible HRP Element: Human Factors and Behavioral Performance
Collaborating Org(s):
Other:
Funding Status: Completed - Task completed and produced a deliverable
Procurement Mechanism(s):
Directed
Aims:

1) To evaluate the extent to which PVT Self Test performance of astronauts is sensitive to fatigue from sleep loss and circadian disruption during ISS missions. This will include the following conditions evaluated individually and in aggregate: i) extended wake duration between 16 hours; ii) sleep restriction defined as total sleep time >0 and <6 hours per 24-hour period; and iii) circadian perturbation associated with night work and slam shifting.

2) To evaluate the extent to which PVT Self Test performance of astronauts is sensitive to fatigue from work intensity during ISS missions. This will include the following conditions evaluated individually and in aggregate: i) extend work durations up to 16 hours per day; ii) more than 6 consecutive work days without a day off for rest; and iii) work requiring extravehicular activity (EVA).

3) To evaluate the extent to which PVT Self Test performance of astronauts declines with time in mission.

4) To explore the extent to which PVT Self Test performance of astronauts will be sensitive to the carry-over effects of medications for sleep (e.g., zolpidem, ramelteon, etc.) on ISS.

5) To evaluate the extent to which PVT Self Test performance feedback (via a graphical interface) is perceived by ISS astronauts as a useful tool for assessing performance capability. This will be addressed throughout the mission by astronaut ratings.
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