Fatigue can result in cognitive and physiological performance deficits such as reduced capacity to maintain high cognitive load, decreased vigilance, and slowed reaction time, and is a major contributor to Naval Aviation flight mishaps. Researchers at the Naval Aerospace Medical Research Laboratory (NAMRL) recently conducted a study of several potential 'readiness to fly' assessment tools. Significant effects of sleep restriction were observed for components of both the cognitive and eye-tracking test batteries. The criterion and outcome measures also showed significant performance decrements over the period of sleep restriction. Lastly, models of performance impairment generated by the Fatigue Avoidance Scheduling Tool (FAST) software were statistically significant. Although these results are promising, before any of the instruments evaluated in this study could be recommended for operational use, additional research and development is recommended.


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