梦游发生在深度睡眠期间。
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.
研究人员说，这发生在第一次深度睡眠期间。
This was during the first deep sleep period, the researchers said.
人们特别注意到，在深度睡眠时，左脑更加活跃。
It was specifically observed that the left side of the brain was more active during deep sleep.
深度睡眠时，参与者的大脑表现与鸟类、海豚相似。
During deep sleep, the participants' brains behaved in a similar manner seen in birds and dolphins.
当研究人员在第二和第三晚重复实验室里的实验时，他们发现在深度睡眠时左脑不能以同样的方式受到刺激。
When the researchers repeated the laboratory experiment on the second and third nights they found the left hemisphere could not be stimulated in the same way during deep sleep.
随着时间的推移，睡眠不足会让人更加容易生病，尤其是深度睡眠和快速眼动睡眠时间不足时。
Over time, not having enough sleep—especially deep and REM sleep—can cause one to become sick more easily.
保持足够且具有深度睡眠。
同样，轻度睡眠也随着年龄的增加而增加，深度睡眠则相反。
Also, the amount of light sleep increases with age, and the amount of deep sleep is reduced.
因为牛奶富含色氨酸，在一些情况下它有助于你进入深度睡眠。
Because milk is rich in the amino acid tryptophan, it can sometimes aid in deep sleep.
小贴士：深度睡眠期发生在睡觉后的70至90分钟。
Tip: Know the first REM period occurs between 70 and 90 minutes after falling asleep.
适当的5 -羟色胺水平有利于促进深度睡眠，迅速恢复体力。
慢波睡眠—也就是深度睡眠—能同时增强学习能力和体力。
Slow wave — or deep wave leads to enhancements in both learning and physical performance.
大脑依靠深度睡眠来记忆归档和组织任务——清楚白天忙碌攒下的杂事。
Your brain depends on sleep to catch up on mental filing and organizational tasks - cleaning up all the messes made during a busy day of activity.
大量研究已经发现缬草改善深度睡眠，提高入睡的速度和睡眠的整体质量。
Numerous studies have found that valerian improves deep sleep, speed of falling asleep, and overall quality of sleep.
深度睡眠时大脑对外界的激励有抵抗力，这解释了为什么很难叫醒梦游者。
The brain is resistant to arousal during deep sleep, which explains why it's difficult to wake a sleepwalker.
该研究称，手机产生的辐射会导致失眠和头痛，而且会缩短深度睡眠的时间。
It claims that radiation from the handset can cause insomnia and headaches as well as cutting the time spent in deep sleep.
我觉得最好的办法是打开你的窗户和窗帘，让自然的光亮将你从深度睡眠中唤醒。
The best way I feel is to open your Windows and curtains, and allow natural light to lift your from your deep sleep.
由深度睡眠激发改善的记忆力还有另一个好处：让人想象——并且更好计划——未来。
Boosted by deep sleep, an improved memory may have yet one more benefit: helping you imagine-and better plan for-the future.
研究人员已经发现，深度睡眠者能阻止外界噪声进入大脑，从而获得无扰状态的睡眠。
Researchers have found that heavy sleepers are able to block outside noise getting to their brains and lead to undisturbed sleep.
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.
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.
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.
应用推荐