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 o
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.
主演：塔拉吉·P·汉森,艾德·赫尔姆斯,杰西·哈奇,贝蒂·吉尔平,大卫·艾兰·格里尔,钱斯·赫斯菲尔德,安德鲁·巴切勒,弗雷泽·艾奇逊,舍治·哈德,Samantha Cole,Terrence Little Gardenhigh,RonReaco Lee,Garfield Wilson,Frankie Hopkins,Caitlin Mitchell-Markovitch,Adam Thomas
