菟丝
菟丝
回复 :一只迟到的足球,一个爱好广泛、啥都会捣鼓两下的乡村老师,一个见了足球头就大的老校长,一群精力过剩、自然疯长的草根娃娃,一场惊天动地的大地震,童年快乐刚刚绽放,便被悲怆湮没了,他们该如何走向未来……
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回复 :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.