SSS 2011-06-20
时间：2019-01-08 作者：英语课 分类：Scientific American(六)月
This is Scientific American’s 60-Second Science. I’m Cynthia Graber. This will just take a minute.
You’re lying in a hammock by a breezy shore. The hammock rocks softly back and forth 1. In no time…(snoring). It turns out that’s not just the relaxation 2 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 recruited 12 healthy males, all good sleepers 3. Each volunteer twice took an afternoon nap in a dark room on a custom-made 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 duration 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.
The next step is to find out whether rocking can help treat sleep disorders 4. Meanwhile, insomniacs can always try a hammock.
Thanks for the minute. For Scientific American’s 60-Second Science, I’m Cynthia Graber.
- The wind moved the trees gently back and forth.风吹得树轻轻地来回摇晃。
- He gave forth a series of works in rapid succession.他很快连续发表了一系列的作品。
- The minister has consistently opposed any relaxation in the law.部长一向反对法律上的任何放宽。
- She listens to classical music for relaxation.她听古典音乐放松。
- He trod quietly so as not to disturb the sleepers. 他轻移脚步，以免吵醒睡着的人。 来自辞典例句
- The nurse was out, and we two sleepers were alone. 保姆出去了，只剩下我们两个瞌睡虫。 来自辞典例句