【科学60秒】摇啊摇，摇到美梦乡_英语听力练习mp3下载-科学-沪江听力酷

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【科学60秒】摇啊摇，摇到美梦乡

听力简介：

You’re lying in a hammock by a breezy shore. The hammock rocks softly [--1--]. In no time…(snoring). It turns out that’s not just the relaxation of being on vacation that’s bringing on sleep. It’s the rocking hammock. That might not be a huge surprise—babies get rocked to sleep. But researchers wanted to know how rocking works.

They [--2--] 12 healthy males, all good sleepers. Each volunteer twice took an afternoon nap in a dark room on a [--3--] bed that could rock. For one nap, the bed was still. For the other, it rocked gently.

All the men fell asleep faster when they swayed. And the scientists monitored the men’s brain activity during all the naps. They found that rocking increased the [--4--] of what’s called N2, a non-REM stage that accounts for about half of a good night’s sleep.

Rocking also increased deep-sleep-associated brain activity—so-called slow oscillations as well as bursts of action called sleep spindles. The research was published in the journal Current Biology. [Laurence Bayer et al, Rocking synchronizes brain waves during a short nap]

The next step is to find out whether rocking can help treat [--5--]. Meanwhile, insomniacs can always try a hammock.
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