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Updated: May 20, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
[Effect of intensive 24-hour shift work on reliability of operators' activity]
Abstract:
Psychophysiological peculiarities of the effect of 24-hour shift work on psychophysiological indices of an operator's efficiency have been considered. It is found that significant manifestations of the fatigue have been developed in servicemen-operators as a result of daily shift-work. The informative psychophysiological characteristics, which can be used as reliable indicators of fatigue level, have been distinguished. A hypothesis has been proposed on the availability of several compensatory mechanisms in maintenance of the work capacity in operators in long-term shift work. An integral index of the reliability of operators' activity has been developed, allowing to assess the quality of work, using a wide range of intensities of the proposed signals as well as to receive data on the overall possibilities of an operator to process information at the given level of reliability.
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