To find what happens in the brain of humans when it is deciding things to buy, George Loewenstein and his co-researchers did an experiment by using the technique of fMRI.They found that different parts of the brain were invloved in the process.The activity in was greatly increased with the displaying of certain product.The great activity was found in the insular cortex when and the subject decided not to buy a product.The activity of the medial prefrontal cortex seemed to associate with both informaiton.What interested Dr Loewenstein was the of the assessment of the product and its price in different parts of the brain.

　　Part II

　　Notes to Reading Passage 1

　　1.the nucleus accumbens, the insular cortex, and the medial prefrontal cortex:

　　大脑的不同部位

　　e.g.cerebellar cortex 小脑皮层cerebral cortex 大脑皮层

　　2.hone:

　　珩磨，磨快，磨练，训练使。。。更完美或有效.

　　3.subvert:

　　毁灭，破坏;摧毁：

　　4.piggyback：

　　骑在肩上;在肩上骑

　　5.deferment:

　　推迟、延迟、分期付款

　　6.aftertaste:

　　余味，回味事情或经历结束后的感觉，特指令人不快的感觉

　　Part III

　　Keys and explanations to the Questions 1-13

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