Gap Sleep Gap 8: We need to develop individualized scheduling tools that predict the effects of sleep-wake cycles, light and other countermeasures on performance, and can be used to identify optimal (and vulnerable) performance periods during spaceflight.
Last Published:  07/31/19 10:05:30 AM (Central)
Responsible Element: Human Factors and Behavioral Performance (HFBP)
Status: Open
Description

a)    Initial State

Workloads are a contributing factor to reduced sleep on orbit. Currently, flight surgeons consult subject matter experts to determine optimal schedules for using countermeasures and working with mission ops to schedule critical tasks. Tools that integrate sleep-wake data and other relevant data points (i.e., light exposure, melatonin, caffeine), to provide performance predictions have been developed through BHP and NSBRI support. Additional efforts are needed to individualize tools and enhance with other countermeasures (e.g., other medications). These tools could aid both flight and ground crews in managing fatigue and establishing revised schedules in real time to help mitigate risk.

b)    Target for Closure

Validated individualized scheduling tools that predict the effects of sleep-wake cycles, light, and other countermeasures, on sleep, circadian rhythms, and performance, as well as the processes and guidelines for implementing these tools operationally.

c)    Metrics for Interim Progress

(1) Develop individualized models of sleep, circadian rhythms, and performance, based on actual sleep-wake schedules and other operationally relevant countermeasures (e.g., lighting, medications) using input from Sleep Gap 2, Sleep Gap 4, Sleep Gap 5 (40%);
(2) Develop/enhance scheduling software to ensure it provides meaningful feedback to NASA operations (20%);
(3) Models and software meet credibility factors outlined by NASA-STD-7009 (20%);
(4) Develop guidelines and update requirements regarding how tools can be used in mission operations (10%);
(5) Update models based on new evidence (10%).

d)    Approach

Validated models of performance can be used in operations to make informed decisions about schedules, particularly for critical operations. BHP’s approach will be to determine methods through which to implement these models in a meaningful matter.

Target for Closure
No Target for Closure available.
Mappings
Risk Risk of Performance Decrements and Adverse Health Outcomes Resulting from Sleep Loss, Circadian Desynchronization, and Work Overload
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