Sleep, Fatigue, and Mood during Mission V of the Hawaii Space Exploration Analog and Simulation (HI-SEAS)
The study will assess sleep and activity patterns of crewmembers during Mission V of the HI-SEAS project. Specifically, the objectives of this study are to assess a) sleep/activity, fatigue, and mood changes throughout the period of living in the habitat, b) the effect of light and the resupply phase on sleep, fatigue, and mood, and c) predicted cognitive effectiveness of the crewmembers using the Fatigue Avoidance Scheduling Tool (FAST). FAST was initially developed for the Department of Defense (DOD). It has been validated using actual performance in aircrew and provides a tool for assessing and mitigating fatigue in shiftwork environments and aviation duty schedules.
Crew will receive actiwatches to wear throughout the study. Activity logs and questionnaires will evaluate sleep quality, daytime sleepiness, insomnia symptoms, and mood states. Ambient light in the living spaces will be monitored using light sensor data loggers.