| Autor: |
McCauley ME; Sleep and Performance Research Center, Washington State University Health Sciences Spokane.; Elson S. Floyd College of Medicine, Washington State University Health Sciences Spokane., McCauley P; Sleep and Performance Research Center, Washington State University Health Sciences Spokane., Riedy SM; Unit for Experimental Psychiatry, Division of Sleep and Chronobiology, University of Pennsylvania Perelman School of Medicine., Banks S; Behaviour-Brain-Body Research Centre, University of South Australia., Ecker AJ; Unit for Experimental Psychiatry, Division of Sleep and Chronobiology, University of Pennsylvania Perelman School of Medicine., Kalachev LV; Department of Mathematical Sciences, University of Montana., Rangan S; Federal Express Corporation., Dinges DF; Unit for Experimental Psychiatry, Division of Sleep and Chronobiology, University of Pennsylvania Perelman School of Medicine., Van Dongen HPA; Sleep and Performance Research Center, Washington State University Health Sciences Spokane.; Elson S. Floyd College of Medicine, Washington State University Health Sciences Spokane. |
| Jazyk: |
angličtina |
| Zdroj: |
Transportation research. Part F, Traffic psychology and behaviour [Transp Res Part F Traffic Psychol Behav] 2021 May; Vol. 79, pp. 94-106. Date of Electronic Publication: 2021 May 12. |
| DOI: |
10.1016/j.trf.2021.04.006 |
| Abstrakt: |
Biomathematical models of fatigue can be used to predict neurobehavioral deficits during sleep/wake or work/rest schedules. Current models make predictions for objective performance deficits and/or subjective sleepiness, but known differences in the temporal dynamics of objective versus subjective outcomes have not been addressed. We expanded a biomathematical model of fatigue previously developed to predict objective performance deficits as measured on the Psychomotor Vigilance Test (PVT) to also predict subjective sleepiness as self-reported on the Karolinska Sleepiness Scale (KSS). Four model parameters were re-estimated to capture the distinct dynamics of the KSS and account for the scale difference between KSS and PVT. Two separate ensembles of datasets - drawn from laboratory studies of sleep deprivation, sleep restriction, simulated night work, napping, and recovery sleep - were used for calibration and subsequent validation of the model for subjective sleepiness. The expanded model was found to exhibit high prediction accuracy for subjective sleepiness, while retaining high prediction accuracy for objective performance deficits. Application of the validated model to an example scenario based on cargo aviation operations revealed divergence between predictions for objective and subjective outcomes, with subjective sleepiness substantially underestimating accumulating objective impairment, which has important real-world implications. In safety-sensitive operations such as commercial aviation, where self-ratings of sleepiness are used as part of fatigue risk management, the systematic differences in the temporal dynamics of objective versus subjective measures of functional impairment point to a potentially significant risk evaluation sensitivity gap. The expanded biomathematical model of fatigue presented here provides a useful quantitative tool to bridge this previously unrecognized gap. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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