It involves a mask that goes over your eyes that flashes lights or emits a sound when you fall into the REM stage of sleep.

这产品有个面具，可以在你即将进入深层梦境的时候在你的眼部发出闪光，或者弄出一些声音。

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The control group spent about 19 percent of their sleep time in the REM stage, compared to about 17 percent for the ADHD group.

控制组在REM阶段的时间是总睡眠时间的19%，而患有adhd的研究组时间是17%。

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As you're getting closer to the REM stage, you might see strange colors or images behind your closed eyes or hear odd noises-this is part of falling into a dream state.

当你正在接近眼皮快速运动时，你也许会在眼皮合拢后看到奇怪的颜色和图形，或者听到古怪的噪声—这预示着你将进入一个梦境。

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From that moment on the Up keeps extremely close tabs on your movement using actigraphy to tell when you've fallen asleep and whether you're in a deep REM stage or lightly snoozing.

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Alcohol reduces how much time we spend in rapid eye movement (REM) sleep - the stage of sleep where dreams generally occur.

BBC: Alcohol-fuelled sleep 'less satisfying'

Excessive alcohol consumption disrupts the 'REM' (Rapid Eye Movement) stage of deep sleep to ruin a night's rest, according to the UK Department of Health.

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