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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.
睡眠之谜全集在线观看由优酷、土豆、爱奇艺、搜狐视频等友情提供，在线观看睡眠之谜全集在线观看之前需要先下载安装播放器。播放器支持目前网络上大多主流媒体格式的视频、音频文件，支持实现本地播放和在线点播，是您休闲娱乐的伙伴，让您的工作与生活充满乐趣，为您提供优秀的视听服务。睡眠之谜直播视频，睡眠之谜最新一期完整版观看内容由新四零视频(www.42pu.com)为大家搜集整理于互联网，转载请注明出处，谢谢合作。