Sleep inertia and alcohol impairment in young adults: neurocognitive effects and interactions Implications for fire escape behaviours

摘要: Alcohol intoxication is known to considerably increase the probability of death from fire across lifespan, extent that it has been isolated as single most significant risk factor. The study investigated combined effects sleep inertia and alcohol impairment on emergency-relevant cognitive performance indicators in a young adult population. Mental tracking, visual scanning, psychomotor speed, working memory sustained, selective, divided attention functions were assessed for decrements reference speed-accuracy trade-off effects. Participants 24 adults (18-26 years) who participated repeated-measures over 2 nonconsecutive nights; 1 night with administration ‘sober’ night. During night, 10-minute testing blocks occurred under (1) baseline sober (2) 0.05 blood concentration (BAC) conditions. Subsequently, subjects awoken stage 4 two consecutive 10-minute blocks (3) (4). Self-reports sleepiness clearheadedness also taken. same procedure was used during (with condition excluded). All showed an effect (i.e., between conditions (2)), even larger greater alone (4)). Sleep selectively affected speed task, whilst accuracy this task by only. When nights compared, there no or synergistic interaction tasks subjective measures first 10 minutes inertia. Conditions produced cognitiveperformance than those administrationalone, but not alone. Indeed, effectsappeared ‘override’ At 10-20 post-awakening, however, sleepinertia began dissipate, thus ‘unmasking’ some tasks,including performance, selective/sustained sleepiness. Divided demonstrated complex unpredictable pattern at post-awakening whereby became significantly worse either alone, indicating possibly being unmasked measure. Other (speed clearheadedness) difference post-awakening. results suggest moderate do combine produce further neurocognitive functioning than those caused poses emergency escape impairment. Moreover data suggests when abruptly situation, prior consumption BAC will impede already compromised state inertia. considers importance arousing complexity, curve (particularly descending limb), predicting performance.