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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.小草影院韩国电影神马影院光棍影院星空影院戴流苏耳环的少女晚学徒池氏塞巴斯蒂安误人子弟普拉我不是李连樱里约，我爱你时光与你都很甜敖瑞鹏护航记疯狂天使之风流院的诱惑尸气逼人恋爱成瘾神探侠侣 第二季追踪巨型鱼 第三季嘉莉妹妹搜查瑠公圳麻辣教授非礼勿言燃烧2018一句顶一万句2016弃卒梦幻奇石隐世狼女第一季约定的梦幻岛胖男孩快跑心急吃不了热豆腐老水仙军统枪口下的女人不良千金寄了一整个春天奇迹人
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.小草影院韩国电影神马影院光棍影院星空影院戴流苏耳环的少女晚学徒池氏塞巴斯蒂安误人子弟普拉我不是李连樱里约，我爱你时光与你都很甜敖瑞鹏护航记疯狂天使之风流院的诱惑尸气逼人恋爱成瘾神探侠侣 第二季追踪巨型鱼 第三季嘉莉妹妹搜查瑠公圳麻辣教授非礼勿言燃烧2018一句顶一万句2016弃卒梦幻奇石隐世狼女第一季约定的梦幻岛胖男孩快跑心急吃不了热豆腐老水仙军统枪口下的女人不良千金寄了一整个春天奇迹人