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'sNOVA: 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.详情
主演：尼尔·阿姆斯特朗,迈克尔·柯林斯,巴兹·奥德林,迪克·斯雷顿,克利福德·E·查尔斯沃思,查尔斯·杜克,吉因·克兰兹,吉姆·洛威尔,约翰·肯尼迪,珍妮特·阿姆斯特朗,琼·安·阿彻,沃尔特·克朗凯特,林登·贝恩斯·约翰逊,格林·伦尼,理查德·尼克松,休·欧布莱恩,Bruce McCandless II,H. David Reed,Bill Anders,Patricia Mary Finnegan,Andy Aldrin
