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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孤岛鲨魂走出硝烟的女人手机换换爱甘城光辉游乐园喜羊羊与灰太狼之奇趣外星客唤爱娟任务太阳河杀手的情书桃花坞开放中第3季9号秘事第八季悸动第一季贞女‧烈女‧豪放女范海辛：伦敦任务守门人尘封的军功章恋恋海湾速度与激情东北合伙人偷龙转凤只是爱着你第二道彩虹恐惧中的恐惧纽约的故事穿岩破云宫本武藏完结篇：决斗岩流岛爱情相欠债噬血狂袭第三季泥巴中的少年
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孤岛鲨魂走出硝烟的女人手机换换爱甘城光辉游乐园喜羊羊与灰太狼之奇趣外星客唤爱娟任务太阳河杀手的情书桃花坞开放中第3季9号秘事第八季悸动第一季贞女‧烈女‧豪放女范海辛：伦敦任务守门人尘封的军功章恋恋海湾速度与激情东北合伙人偷龙转凤只是爱着你第二道彩虹恐惧中的恐惧纽约的故事穿岩破云宫本武藏完结篇：决斗岩流岛爱情相欠债噬血狂袭第三季泥巴中的少年