控制我们24小时睡眠和清醒生理周期的自然生物钟，生理的节奏很容易会被改变的时间表扰乱，他们深受光线和黑暗的影响。
The natural internal clock that controls our 24-hour cycle of sleep and waking, circadian rhythms are easily upset by changes in schedule, and they're greatly affected by light and darkness.
我们大多数人会从清醒状态转入预料中的周期：深度非快速动眼睡眠（non-REM），之后是充满梦境的快速动眼（REM）睡眠。
Most of usdrift from our waking lives into predictable cycles of deep, non-REM sleep, followed by dream-filled rapid-eye-movement (REM) sleep.
最近有关人类的研究显示每天人们暴漏在的人工室内光线的总量可以重置人体的睡眠和清醒周期。
Recent studies on humans have shown that the amount of artificial indoor light to which people are exposed per day can resynchronize the body's cycle of sleep and wakefulness.
分析数据后，眼罩便会在佩戴者进入睡眠周期的最轻度睡眠时叫醒佩戴者，这时佩戴者也最接近清醒的状态。
After analysing the data, the mask will wake the wearer up when they are in the lightest stage of their sleep cycle and therefore closest to being awake.
它也赋予的线索如何周期的睡眠和清醒的规管在大脑中。
It also gives clues to how cycles of sleep and wakefulness are regulated in the brain.
它也赋予的线索如何周期的睡眠和清醒的规管在大脑中。
It also gives clues to how cycles of sleep and wakefulness are regulated in the brain.
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