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
2009-08-19
48
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."
选项
A、Normally they are not scared by it.
B、Usually they are seriously scared by it.
C、They feel ridiculous when seeing it.
D、They often feel uncomfortable at it.
答案
A
解析
根据题干中关键词neutral stimulus定位到原文第二段首句participants watched a short video or a person conditioned to fear a so-called neutral stimulus—something people normally wouldn’t fear—paired with something they find naturally aversive, in this case an electrical shock.细节题。分析句子结构和内容后可知,人们通常并不害怕中立刺激物,故该题答案是A)。
转载请注明原文地址:https://www.kaotiyun.com/show/YcpK777K
0
大学英语六级
相关试题推荐
Thepeopleinyourtownarefar(friendly)______thanweexpected.
Whenyouopenyourelectronicmail,youmayfindinformationabouthowtobuymedicine,cheapairlinetickets,books,computerp
VisitthelargestislandinGreatSaltLake,whichofferscamping,wildlifeviewing,horsebackridingandmountainbiking,etc.
VisitthelargestislandinGreatSaltLake,whichofferscamping,wildlifeviewing,horsebackridingandmountainbiking,etc.
MostofusgrowuptakingcertainthingsforgrantedWetendtoassumethatexpertsandreligiousleaderstellus"thetruth".W
MostofusgrowuptakingcertainthingsforgrantedWetendtoassumethatexpertsandreligiousleaderstellus"thetruth".W
A、Hainan.B、Beijing.C、Tibet.D、Chongqing.A本题的问题关键词是where。对话中男士提到海边、沙滩,所以四个选项中符合要求的只有海南,因此选A。
A、Shehasfinallygotapromotionandapayraise.B、Shehasgotasatisfactoryjobinanothercompany.C、Shecouldatlastleav
A、Bytakingoutapatentonit.B、Bybuildinghouses.C、Byfurtherperfectinghisdesign.D、Bytellingothers.AHowhastheinve
A、WatchingTV.B、Knittingsocks.C、Chattingwithneighbors.D、Doinghousework.BWhatdoesthemanthinkisthelatesthobbyoft
随机试题
以腹泻为主要感染症状的病原微生物有()
“天”和“天空”、“静”和“安静”因为音节数不同,所以不能构成同义词。()
下列属于绝对权利的有()。
简述良好思维品质的特性。
扩张型心肌病( )。肥厚型心肌病( )。
一般资料:求助者,男性,30岁,公司职员案例介绍:求助者原计划在四月份举行婚礼,准岳母却以求助者父亲没有兑现“全款买房”为由,不同意女儿马上结婚。女儿站在了母亲的一边,认为求助者的父亲只支付了六十万首付,购房中没有自己的名字是对他们母女的轻视和
性格本身没有好坏之分,它是人最核心的人格差异,受人的价值观、人生观、世界观的影响。()
教师专业化应符合的条件有()
《宪法》第62条规定:“全国人民代表大会行使下列职权……(十一)改变或者撤销全国人民代表大会常务委员会不适当的决定……”《宪法》第67条规定:“全国人民代表大会常务委员会行使下列职权……(七)撤销国务院制定的同宪法、法律相抵触的行政法规、决定和命
Populationagingisatriumphofcivilization.Itisthe【C1】______consequenceofattainingdesiredsmallerfamilysizesandlong
最新回复
(
0
)