The brain hemispheres take turns sinking into the sleep stage characterized by slow brain waves.

大脑半球轮流进入以慢脑波为特征的睡眠阶段。

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Deep sleep is associated with slow brain waves, and larks spent 50% more time in such slow-wave sleep than owls did.

睡眠之深与否与慢波有关，而百灵鸟型处于慢波睡眠的时间比夜猫子型多50%甚至更多。

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Multiple studies have shown that women generally have more slow-wave sleep, which is the deepest sleep.

已经有多项研究证实，女性通常会有更多的慢波睡眠，也就是最深度的睡眠。

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There is slow-wave sleep or "quiet sleep."

第一种是慢波睡眠，“安静的睡眠”

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So, if you're woken up during slow-wave sleep you're going to be thinking "Did I take the-- yes, while I was dreaming I was thinking about the garbage," but if you're woken up during REM, "But a monkey was eating my grandmother," and that sort of thing. So, there is a distinction.

在慢波睡眠中醒过来,你会想“我倒垃圾了吗？,原来我睡觉是想着倒垃圾了”,但如果你在REM睡眠中醒过来，“天啊，有只猴子在吃我奶奶”,这就是真正的梦和半睡半醒的想法之间的区别。

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One important kind of sleep, called slow wave sleep, gets shorter as people age.

FORBES: Sleep On Demand

But some epilepsy medicines, including Neurontin from Pfizer and Gabitril from Cephalon (nasdaq: CEPH - news - people ), may also help slow wave sleep.

FORBES: Sleep On Demand

It is the movement of potassium (and also sodium) ions that causes the electrical impulses that nerve cells carry including the impulses found in slow-wave sleep.

ECONOMIST: Memory formation