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SSS 2008-06-16

时间:2010-05-14 02:32来源:互联网 提供网友:0922013129   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science, I'm Karen Hopkin. This'll just take a minute.

You've landed a small role in a low-budget horror movie.To get ready,you need to practice your reaction shot, you know, that look you will get when your boss peels off his face to reveal the slime-oozing alien he really is. So look in the mirror and give us some terror.If you're doing it right,your eyes are wide-open and your eyebrows1 are raised,but why is that? I mean how come people when they're scared all make a similar face.Darwin thought there was a reason that all expressions evolved because they offer some benefit,and scientist from Ontario think Darwin was right.They asked volunteers to try to look frightened and then they measured the physiological2 effects.They found that making a fraidy face allows people to see further,locate targets faster and take in more air when they breathe. The findings appear in the current online issue of Nature NeuroScience.Those reactions make sense because if you see something startling or out of the ordinary, you can use your fear-enhanced vision to assess the situation and if need be,take a deep, fear-boosted breath and run.

Thanks for the minute for Scientific American's 60-Second Science, I'm Karen Hopkin.

 


点击收听单词发音收听单词发音  

1 eyebrows a0e6fb1330e9cfecfd1c7a4d00030ed5     
眉毛( eyebrow的名词复数 )
参考例句:
  • Eyebrows stop sweat from coming down into the eyes. 眉毛挡住汗水使其不能流进眼睛。
  • His eyebrows project noticeably. 他的眉毛特别突出。
2 physiological aAvyK     
adj.生理学的,生理学上的
参考例句:
  • He bought a physiological book.他买了一本生理学方面的书。
  • Every individual has a physiological requirement for each nutrient.每个人对每种营养成分都有一种生理上的需要。
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TAG标签:   SSS  eyebrow
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