Self-awakening improves alertness in the morning and during the day after partial sleep deprivation
Self-awakening improves alertness in the morning and during the day after partial sleep deprivation
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DOI：
10.1111/jsr.12176
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发表时间：
2014-12-01
影响因子：
4.4
通讯作者：
Takahashi, Masaya
中科院分区：
文献类型：
--
作者：
Ikeda, Hiroki;Kubo, Tomohide;Takahashi, Masaya
不需要闹钟就能在预定时间醒来的能力被称为自我觉醒。自我唤醒通过消除睡眠惯性来提高早晨的警觉性；然而，自我觉醒对白天警觉性和因睡眠不足而恶化的警觉性的影响尚不清楚。这项研究的目的是确定部分睡眠剥夺后自我觉醒对早晨和白天警觉性的影响。15名没有自我觉醒习惯的健康男性参加了包括强迫觉醒和自我觉醒条件的交叉试验。在每种情况下，参与者在家中连续4天每晚的睡眠时间被限制在5小时。他们每天早上醒来后立即完成一项精神运动警觉性任务和对困倦程度的主观评定。第四天，参与者在实验室完成了七次主观睡意评分、精神运动警觉性任务和睡眠潜伏期测试，每隔1小时进行一次。在早晨和白天，自我唤醒组对精神运动警戒任务的反应速度高于强迫唤醒组。我们的研究结果表明，自我觉醒通过减少睡眠惯性和缓解部分睡眠剥夺引起的白天嗜睡，提高了警觉性（通过反应速度来评估）。
The ability to awaken at a predetermined time without an alarm is known as self-awakening. Self-awakening improves morning alertness by eliminating sleep inertia; however, the effects of self-awakening on daytime alertness and alertness that has deteriorated as a result of sleep loss are unknown. The aim of this study was to determine the effects of self-awakening on both morning and daytime alertness after partial sleep deprivation. Fifteen healthy males without the habit of self-awakening participated in a cross-over trial including forced awakening and self-awakening conditions. In each condition, participants' sleep was restricted to 5h per night in their homes for 4 consecutive days. They completed a psychomotor vigilance task and subjective ratings of sleepiness immediately upon awakening each morning. On the fourth day, participants completed subjective ratings of sleepiness, a psychomotor vigilance task and sleep latency tests in the laboratory seven times at 1-h intervals during the day. The response speed on the psychomotor vigilance task, in the morning and during the day, was higher in the self-awakening than the forced awakening condition. Our results showed that self-awakening improved alertness (assessed by response speeds) by reducing sleep inertia and alleviated daytime sleepiness heightened by partial sleep deprivation.