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  3. It is common today to identify, in some way, with one side of the brain. You may think, for example, that you are more "right br

It is common today to identify, in some way, with one side of the brain. You may think, for example, that you are more "right br

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问题     It is common today to identify, in some way, with one side of the brain. You may think, for example, that you are more "right brain" than "left". When we make such statements, we are referring to the fact that the two halves of the human brain deal with information from the senses, and hence the world, in different ways. In general, the left hemisphere is responsible for our processing of language and logic and the right deals with aspects of thought like emotions and spatial relationships. The hemispheres also control our movements, though the left hemisphere controls the right side of our bodies, and vice versa.
    The fact that the two hemispheres of the brain work in different ways on different tasks is a relatively new discovery. That discovery was made by a psychobiologist named Roger Sperry and it won him a Nobel Prize in 1981. Sperry uncovered the inner workings of normal brains by studying the brain function of people who had a certain kind of brain damage. In most brains, the two halves are connected by the corpus callosum, a bundle of millions of nerves, which serves as a "bridge" of sorts between the two hemispheres, allowing them to communicate with each other. The people Sperry studied had had their corpus callosa cut, and because of this, their left and right brains couldn’t exchange information. In a famous experiment, Sperry showed one such subject two pictures. The subject saw a picture of a knife with his right eye(controlled by the left brain)and a picture of a spoon with his left eye(controlled by the right brain). When asked to name what he saw, the subject said knife, because it is the left brain that deals with language and the naming of things. However, when asked to reach over with his left hand to a nearby table on which was placed both a knife and a spoon, and choose, without looking, the object he saw, the subject chose the spoon. This is because his left eye(controlled by the right brain)saw the spoon and his left hand(also controlled by the right brain)chose this rather than the knife. The subject himself was not at all conscious of the fact that he was seeing and choosing two different objects.
The subject of the knife / spoon experiment______.
选项 A、was not aware that he was seeing two images
B、thought the spoon was a knife
C、could not tell the difference between a spoon and a knife
D、was unable to process visual information accurately
答案A
解析 第二段最后一句The subject himself was not at all conscious of the fact that he was seeingand choosing two different objects．提到：实验主体自己完全没有意识到自己看到的和选择的是两件不一样的东西，故A项为正确答案。D项较有迷惑性，但通过整个试验过程，我们能够发现实验主体看到了两样东西，但他说出的名字是一样，选择的却是另一样，原因是负责左右眼的脑半球功能不一样，而非是对视觉信息的加工出了问题。
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