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.家乡的消息母牛一条追我魂魄罗西与莫妮卡之骊靬情记忆的芬芳逐浪之爱锦绣前程1945年味饭桌2024基和皮尔第四季彭德怀元帅龙威父子流浪少年1天狗党探秘古崖居静音的爱 有香气卫子夫X射线横行霸道（粤语）非婚不可 普通话版开心乐园咱们结婚吧海伦娜之路蜡笔小新之电击！猪之蹄大作战杀手荒郊疑云第三季家在香港罪犯们朋克武士声生不息·家年华金花家庭录像带方Val梦寐之子回到荒野unmet 某脑外科医的日记广东小老虎午夜巴黎2011斑马一家历险记：死亡与新生同栖生活婚礼面纱遗产忘情巴黎