睡眠之谜

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　　NOVA: Mysteries of Sleep Like virtually every other animal, humans need sleep to survive. But why? What do we gain from spending nearly a third of our lives in such a defenseless state? And what's at stake if we sleep poorly? The functions of sleep have long been something of a mystery. But now scientists are peering deep into the brain to see what happens while we snooze. One study reveals that well-timed bursts of pink noise can nudge a person's brain waves, extending periods of slow-wave, or deep, sleep. And toddlers learning new words show that taking even a short nap after learning something new can help the information stick. And when it comes to sleeping poorly, it may turn out that having interrupted sleep can be just as harmful as missing sleep altogether. As scientists come to understand the powerful role that sleep -- or lack of it -- plays in everything from memory to trauma to emotion regulation, one thing is clear: This biological function is as crucial as it is complex.迷离劫1996哭泣杀神1995第二道彩虹地狱厨房(美版)第二季热辣滚烫我的青春有点二非常私人东南亚港澳传奇剧场版MOZU上帝之手2021倒扣的王牌醉拳苏乞儿十三号怪屋运财童子灰姑娘情结钛2014黑冰巴拿马裁缝孩子们2013雾夜足音飞扬的青春相扑男孩健身世界完美设陷97家有喜事（国语版）新生六居客第四季亿万 第六季问天补锅英雄（粤语）圈套剧场版3：灵异者大混战人鬼情未了1990生日蛋糕2021尸人庄杀人事件大饭店第三季难忘的时刻死灵法师1988暗藏杀机北斋里奥本天伦之旅2009