首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A study reveals that the brain areas that respond when fear is learned through personal experience are al-so triggered when we s
A study reveals that the brain areas that respond when fear is learned through personal experience are al-so triggered when we s
admin
2010-09-25
53
问题
A study reveals that the brain areas that respond when fear is learned through personal experience are al-so triggered when we see someone else in distress.
In the study, participants watched a short video of a person conditioned to fear a so-called neutral stimulus-something people normally wouldn’t fear--paired with something they find naturally aversive (令人讨厌的), in this case an electrical shock. The person in the video watched colored squares on a computer screen: When a blue square appeared, the person received a mild shock; when a yellow square appeared, there was no shock. The participant in the video responded with distress when the blue square appeared—he would blink hard, tense his cheek muscles and move his hand. "So it’s clear that he’s uncomfortable, he’s in distress," said study team member Andreas Olsson of Columbia University. "And he’s already in distress before he receives the shock, you see him anticipate receiving the shock." By contrast the participant in the video appeared relaxed when the yellow square popped up,
Participants were told they would take part in a similar experiment, and when presented with the blue square, they responded with fear, anticipating a shock, though they were never actually shocked. "Just by watching, they learn themselves," Olsson explained.
This second learning was reflected in the brain. In previous classical conditioning experiments where a fear is learned firsthand, a part of the brain called the amygdala (扁桃核) has been shown to be critical to the development and expression of fears. The scientists monitored the brain activity of each participant during the experiment. Imaging showed that the amygdala responded both when the subjects watched the video of someone else receiving shocks and when they were presented with the blue squares themselves.
"We found that the amygdala is involved both when you’re watching somebody receiving shocks, and when you’re expecting to receive shocks later on yourself," Olsson said. So it seems that similar processes in the brain are triggered both when fears are experienced first-hand and when they are observed in others.
In the real world, the finding could explain why some people are afraid of things despite little contact with them. "You learn by observing other people’s emotional expressions, and what we are showing is that that can be as effective as having those direct experiences yourself," Olsson said. "That’s probably one of the reasons why a lot people are having phobias (恐怖症) of certain kinds of stimuli, such as snakes and spiders."
The word "amygdala"(Line 2, Para.4) probably refers to the area in the brain that
选项
A、memorizes fearful situations
B、reacts to fearful situations
C、control negative emotions
D、reflects unforgettable images
答案
B
解析
语义题。文中说当受验者看到录象中某人被电击及当他们自己面对那些蓝色方格时,他们大脑中的amygdala便会对上述情况作出反应。由此可判断,该物质会对令人害怕的情形作出反应。B中react是原文respond的同义词,且选项中的fearful situations是对原文相关内容的恰当概括。
转载请注明原文地址:https://jikaoti.com/ti/3keFFFFM
0
大学英语六级
相关试题推荐
A、Amanandawomanshouldfolloweveryoftheirownimpulserespectively.B、Agoodmarriagetakessomelevelofcompromisebetw
A、Soil.B、Humanpopulation.C、Forest.D、Water.B细节考察题。从文章中看出有土壤,森林,水资源,动植物等方面,而没提及对人口造成的影响。
A、Apharmacist.B、Asalesman.C、Alibrarian.D、Adoctor.A人物身份推断题根据关键词prescription和vitamins可以推断布朗先生是一名药剂师。
Tofightagainstcomputercrimes,acomputersystemneedsasurewayofidentifyingitsrightusersandrejectingthosewhoare
A、Amechanic.B、Arepairman.C、Amanager.D、Asalesman.B
Insomewaystheemploymentinterviewislikeapersuasivespeechbecausetheapplicant(interviewee)seekstopersuadetheempl
A、Planets.B、Themoon.C、Thesun.D、Gods.C细节辨别题文章介绍了solar和lunar两个词的含义由来,solar表示与太阳有关的,而lunar表示与月亮有关的。
Thetragicimpactofthemoderncityonthehumanbeinghaskilledhissenseofaesthetics,thematerialbenefitsofawealthys
A、Themanisanexceptionalstudentandwillwritetheexamfortheclass.B、Circumstanceswillnotpermitthestudenttotaket
随机试题
口气臭秽属于
血虚风燥的皮肤病可见
A、面部,额部B、面颊,头顶,头后部C、头侧部D、肩胛部E、腋下手三阴经出于()
证券市场对促进经济发展具有十分重要的积极作用,主要表现在()。
A公司拟添置一套市场价格为6000万元的设备,需筹集一笔资金。现有三个筹资方案可供选择(假定各方案均不考虑筹资费用):(1)发行普通股。该公司普通股的β系数为2,一年期国债利率为4%,市场平均报酬率为10%。(2)发行债券。该债券期限10年,票
()领导全国公安机关的督察工作。
现代企业制度的典型形式是()。
作用力度最强的货币政策工具是()。
设有关系模块R(B,C,M,T,A,G),根据语义有如下函数依赖集:F=(B→C,(M,T)→B,(M,C)→T,(M,A)→T,(A,B)→G}。则关系模式R的候选码是______。
ForgetexpensiveeducationalDVDsandprivatetutors,thesecrettosmartchildrencouldbesosimpleasgivingbirth【M1】______
最新回复
(
0
)