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SSS 2009-06-23

时间:2010-05-18 02:56来源:互联网 提供网友:mark@li   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 will just take a minute.

If all you have is a hammer, they say that everything looks like a nail. But when you use that hammer, it looks like you are arm to your brain anyway. A report in the June 23rd issue of the journal Current Biology shows that the brain interprets tools as just an extension of your physical self. To move our bodies around in space, the brain builds what's called a “body schema”, a representation of all of our various parts. And this so-called schema is frequently updated to keep up with our ever-changing bodies. Otherwise you will think you were still a bitty baby. Now scientists have taken this body image overhaul1 a step further. They've shown that when we use a tool, even for a few minutes, the brain sees it as a temporary body part. Subjects were asked to pick up a block. They then used a long mechanical grabber to pick up the same block. Then they tried to snag the block bare-handed again. And it took longer than their initial grab. That's because they were briefly2 behaving like their arms were still augmented3. So next time you feel like a total tool, you might just be hitting the nail on the head.

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 overhaul yKGxy     
v./n.大修,仔细检查
参考例句:
  • Master Worker Wang is responsible for the overhaul of this grinder.王师傅主修这台磨床。
  • It is generally appreciated that the rail network needs a complete overhaul.众所周知,铁路系统需要大检修。
2 briefly 9Styo     
adv.简单地,简短地
参考例句:
  • I want to touch briefly on another aspect of the problem.我想简单地谈一下这个问题的另一方面。
  • He was kidnapped and briefly detained by a terrorist group.他被一个恐怖组织绑架并短暂拘禁。
3 Augmented b45f39670f767b2c62c8d6b211cbcb1a     
adj.增音的 动词augment的过去式和过去分词形式
参考例句:
  • 'scientists won't be replaced," he claims, "but they will be augmented." 他宣称:“科学家不会被取代;相反,他们会被拓展。” 来自英汉非文学 - 科学史
  • The impact of the report was augmented by its timing. 由于发表的时间选得好,这篇报导的影响更大了。
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