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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.星空影院桃花影院九九影院私人影院樱花影院星辰影院青柠影院神马影院三妹影院牛马影院金牌影院铁锅爱炖糖葫芦今夜不设防大侦探第十一季座头市地狱旅暗杀第一夫人神探朱古力日本小偷故事爱的透视图安娜与国王1999我们的绝地反击神秘工作完美革命神树之叶缘路终点站第一季关于爱我所知道的一切第一季满城云雨锁淮舟再见中国海南·雨林秘境毁坏热血安全官蜘蛛夫人：超感觉醒惹火甜心别想跑搭便车的人2006枫叶红了2002烈焰2024庆余年五个相扑的少年女巫季节罗宁
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.星空影院桃花影院九九影院私人影院樱花影院星辰影院青柠影院神马影院三妹影院牛马影院金牌影院铁锅爱炖糖葫芦今夜不设防大侦探第十一季座头市地狱旅暗杀第一夫人神探朱古力日本小偷故事爱的透视图安娜与国王1999我们的绝地反击神秘工作完美革命神树之叶缘路终点站第一季关于爱我所知道的一切第一季满城云雨锁淮舟再见中国海南·雨林秘境毁坏热血安全官蜘蛛夫人：超感觉醒惹火甜心别想跑搭便车的人2006枫叶红了2002烈焰2024庆余年五个相扑的少年女巫季节罗宁