OBJECTIVE The current study investigated the behavioral, cognitive, and electrophysiological impact of mild (only a few hours) and acute (one night) sleep loss via simultaneously recorded behavioural and physiological measures of vigilance. METHODS Participants (N = 23) came into the lab for two testing days where their brain activity and vigilance were recorded and assessed. The night before the testing session, participants either slept from 12am to 9am (Normally Rested), or from 1am to 6am (Sleep Restriction). RESULTS Vigilance was reduced and sleepiness was increased in the Sleep Restricted vs. Normally Rested condition, and this was exacerbated over the course of performing the vigilance task. As well, sleep restriction resulted in more intense alpha bursts. Lastly, EEG spectral power differed in Sleep Restricted vs. Normally Rested conditions as sleep onset progressed, particularly for frequencies reflecting arousal (e.g., delta, alpha, beta). CONCLUSIONS The findings of this study suggest that only one night of mild sleep loss significantly increases sleepiness and, importantly, reduces vigilance. In addition, this sleep loss has a clear impact on the physiology of the brain in ways that reflect reduced arousal. SIGNIFICANCE Understanding the neural correlates and cognitive processes associated with loss of sleep may lead to important advancements in identifying and preventing deleterious or potentially dangerous, sleep-related lapses in vigilance.

中文翻译：

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轻度睡眠剥夺和警惕性的脑电图和行为相关性

目标当前的研究通过同时记录的行为和生理警戒措施调查了轻度（仅几个小时）和急性（一晚）睡眠不足对行为、认知和电生理的影响。方法 参与者（N = 23）进入实验室进行为期两天的测试，他们的大脑活动和警惕性被记录和评估。测试会议的前一天晚上，参与者要么在上午 12 点到 9 点睡觉（正常休息），要么从凌晨 1 点到早上 6 点（睡眠限制）。结果 在睡眠受限与正常休息条件下，警觉性降低，嗜睡增加，并且在执行警觉任务的过程中加剧。同样，睡眠限制导致更强烈的阿尔法爆发。最后，睡眠受限与睡眠受限的脑电图谱功率不同。睡眠开始时的正常休息条件，特别是对于反映唤醒的频率（例如，delta、alpha、beta）。结论 这项研究的结果表明，只有一晚轻度睡眠不足会显着增加困倦感，重要的是，会降低警惕性。此外，这种睡眠不足对大脑的生理机能有明显的影响，这反映了觉醒的减少。意义 了解与睡眠不足相关的神经相关性和认知过程可能会在识别和预防有害或潜在危险的、与睡眠相关的警惕性失误方面取得重要进展。结论 这项研究的结果表明，只有一晚轻度睡眠不足会显着增加困倦感，重要的是，会降低警惕性。此外，这种睡眠不足对大脑的生理机能有明显的影响，这反映了觉醒的减少。意义 了解与睡眠不足相关的神经相关性和认知过程可能会在识别和预防有害或潜在危险的、与睡眠相关的警惕性失误方面取得重要进展。结论 这项研究的结果表明，只有一晚轻度睡眠不足会显着增加困倦感，重要的是，会降低警惕性。此外，这种睡眠不足对大脑的生理机能有明显的影响，这反映了觉醒的减少。意义 了解与睡眠不足相关的神经相关性和认知过程可能会在识别和预防有害或潜在危险的、与睡眠相关的警惕性失误方面取得重要进展。