以长程睡眠脑电数据分析和仿真为例，分析结果表明关联维的高低能够反映出睡眠的阶段，据此对非快速眼动睡眠期的仿真预测与实际结果相符。
The value of correlation dimension can reflect sleep stages after analyzing and simulating the sleep EEG, and then simulation forecast for NREM sleep stage was made which accorded with actual result.
在睡眠的各个阶段，呼吸道中产生了一些变化。
During all phases of sleep, several changes in the air passages have been observed.
大脑半球轮流进入以慢脑波为特征的睡眠阶段。
The brain hemispheres take turns sinking into the sleep stage characterized by slow brain waves.
在不同的睡眠阶段，我们的学习方式可能会有所不同。
你给时钟设定了你想要醒来的最晚时间，然后它会在之前的浅睡眠阶段按时叫醒你。
You program the clock with the latest time at which you want to be wakened, and it then duly wakes you during the last light sleep phase before that.
这个被称为“智能睡眠”的闹钟会测量你的睡眠周期，等你进入最浅的睡眠阶段后再叫醒你。
The clock, called Sleep Smart, measures your sleep cycle, and waits for you to be in your lightest phase of sleep before rousing you.
我们现在所知道的就是，人们在睡眠周期的不同阶段往往会做不同类型的噩梦。
What we do know is that people tend to have different kinds of nightmares at different points during the sleep cycle.
它通常发生在睡眠的最初几个小时，这个阶段被称为深度睡眠阶段。
It usually happens in the first few hours of sleep in the period called deep sleep.
在第一阶段，人的睡眠很浅。
下一个阶段又称为快速眼动睡眠阶段，我们的呼吸开始加快，眼球也开始快速跳动，但我们的身体却保持不动。
In the next stage—REM sleep—we begin to breathe faster and our eyes move around quickly, but our bodies do not move.
在第三和第四阶段（通常称为“深度睡眠”），这时唤醒一个人是很难的。
During stages three and four (often called "deep sleep") , it is very hard to wake up a person.
那么，我们能做些什么才能恢复这个奇妙而神秘的恢复性睡眠阶段？
So what can we do to get more of this marvelous, mysteriously restorative sleep stage?
尽管梦可能对记忆和学习很重要既成事实，在睡眠不同阶段我们学习的方式还不是很明晰。
While it's now well established that dreams may be important for memory and learning, the way we learn during different phases of sleep is less clear.
酒精会加重失眠，也会破坏快速眼动(REM)睡眠，这正是身体处于恢复阶段的时候。
Alcohol can worsen insomnia and also impair rapid eye movement (REM) sleep, the time when the body is in its restorative phase.
由顶尖手机企业赞助，研究显示睡前使用手机致使进入深度睡眠阶段的时间明显延长。
Sponsored by the leading mobile phone companies, it showed that using handsets just before going to bed caused people to take longer to reach deeper stages of sleep.
所以真正重要的是其他睡眠阶段是否有不可替代的作用？
So the real question is how critical those other phases of sleep are. Do they yield any irreplaceable benefits?
很多重要的生理活动都发生在深睡眠阶段。
Many important physiological processes occur during deep sleep.
睡眠应该是平静而放松的阶段。
如果你睡了超过20分钟，你会度过眼动睡眠而进入睡眠的下一阶段，深度睡眠。
If you sleep longer than about 20 minutes, you'll pass out of REM and into other (deeper) phases of sleep.
结果发现，受到辐射的那组研究对象进入深度睡眠第一阶段所用的时间较长，而且深度睡眠的时间也较短。
The first group took longer to enter the first of the deeper stages of sleep and spent less time in the deepest one.
科学家们已经可以识别不同的睡眠阶段，而且发现，人在睡眠很少的情况下，机体仍然很好的运转，但只是在睡眠时做了梦才如此。
Scientists have identified various stages of sleep, and they have found that humans can function well on very little sleep, but only if they dream.
虽然它也许会导致你昏昏欲睡，酒精打碎你的睡眠阶段，使你的睡眠更分散。
Though it may cause you to become drowsy, alcohol fragments the stages of your sleep and makes it more disrupted.
接着，他们研究了情绪的不同方面和它们的睡眠和梦不同阶段的关系。
Then they explored the various aspects of mood and their relationship to the various stages of sleep and dreaming.
在非快速眼动睡眠期的更深层阶段，脑活动较慢一点。
In the deeper stages of non-REM sleep brain activity is slower.
正如电影情节从老电影中取材一样，REM和其他阶段的睡眠将新信息与过去的记忆揉合，形成了我们自我特征的一大部分。
As movie plots are constructed out of old movies, so does rem and other stages of sleep remix new information with old memories, forming a huge part of our identity.
脑电图显示，作为两阶段睡眠者的我们，每天确实有两段时间会警觉性下降-分别是晚上和中午。
EEGs show that we are biphasic sleepers with two alertness dips — one at night time and one mid-day.
我们可能在不同睡眠阶段学习的不一样，吕贝克大学的德国睡眠专家教授简·伯恩说。
We may learn differently during different sleep stages, says German sleep expert Professor Jan Born from the University of Lübeck.
很显然，睡眠会带来差异，但是这种差异与人们花在每一睡眠阶段的时间长短没有关系。
Clearly sleep made a difference, but that difference didn't relate to how much time one spent in each of the various sleep stages.
很显然，睡眠会带来差异，但是这种差异与人们花在每一睡眠阶段的时间长短没有关系。
Clearly sleep made a difference, but that difference didn't relate to how much time one spent in each of the various sleep stages.
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