时间:2018-12-24 作者:英语课 分类:Scientific American(六)月


英语课

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 overhaul 1 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 briefly 2 behaving like their arms were still augmented 3. 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.

 



1 overhaul
v./n.大修,仔细检查
  • 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
adv.简单地,简短地
  • 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。
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army map service
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