Attention Regulation Among Sleep-Deprived Air-Force Pilots

Short sleep duration is associated with adverse physical and mental events. However, it is quite challenging to objectively quantify its impact on human cognitive performance. Thus, we aim to examine the effects of sleep deprivation on physiological measures of emotional and attention regulation, in terms of recovery dynamics among sleep-deprived air force pilots. Ninety-one pilots participated in a sleep deprivation workshop held by an aeromedical center. The Auditory Sustained Attention Test (ASAT) and the Psychomotor Vigilance Test were applied to evaluate emotional and attention performance at baseline, post 24-h of sleep deprivation, following recovery of 3- and 8-h of sleep. Machine learning was used to predict the aerial professions based on the physiological measures. The results indicate that 24 h of sleep deprivation induced impairments in both attention and emotional regulation; however, while 3 h of sleep recovery have ameliorated emotional regulation and latency to response inhibition, attention performance required 8 h of sleep to ameliorate the observed 70% impairment. The physiologically measured adverse effects induced by sleep deprivation were distinctive among aerial professions, thus allowing machine learning prediction with high accuracy, sensitivity, and specificity. The effects of sleep-deprivation-induced fatigue were detected by the ASAT measures, which may be utilized as an objective, non-invasive physiological measure to quantify emotional and attention regulation. The ability to monitor sleep effects in a fast and accurate manner may be beneficial for the competence assessment of pilots and promote safety, and the differentiation across the aerial professions may potentially improve individual suitability assessment, together with the consequences of sleep deprivation.