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
考研
In a purely biological sense, fear begins with the body’ s system for reacting to things that can harm us—the so-called fight-or
In a purely biological sense, fear begins with the body’ s system for reacting to things that can harm us—the so-called fight-or
admin
2017-01-17
19
问题
In a purely biological sense, fear begins with the body’ s system for reacting to things that can harm us—the
so-called fight-or-flight response
. "An animal that can’t detect danger can’t stay alive," says Joseph LeDoux. Like animals, humans evolved with an elaborate mechanism for processing information about potential threats. At its core is a cluster of neurons deep in the brain known as the amygdala.
LeDoux studies the way animals and humans respond to threats to understand how we form memories of significant events in our lives. The amygdala receives input from many parts of the brain, including regions responsible for retrieving memories. Using this information, the amygdala appraises a situation—I think this charging dog wants to bite me—and triggers a response by radiating nerve signals throughout the body. These signals produce the familiar signs of distress: trembling, perspiration and fast-moving feet, just to name three.
This fear mechanism is critical to the survival of all animals, but no one can say for sure whether beasts other than humans know they’re afraid. That is, as LeDoux says, "if you put that system into a brain that has consciousness, then you get the feeling of fear."
Humans, says Edward M. Hallowell, have the ability to call up images of bad things that happened in the past and to anticipate future events. Combine these higher thought processes with our hardwired danger-detection systems, and you get a near-universal human phenomenon: worry.
That’s not necessarily a bad thing, says Hallowell. "When used properly, worry is an incredible device ," he says. After all, a little healthy worrying is okay if it leads to constructive action—like having a doctor look at that weird spot on your back.
Hallowell insists, though, that there’ s a right way to worry. "Never do it alone, get the facts and then make a plan." He says. Most of us have survived a recession, so we’re familiar with the belt-tightening strategies needed to survive a slump.
Unfortunately, few of us have much experience dealing with the threat of terrorism, so it’s been difficult to get fact about how we should respond. That’s why Hallowell believes it was okay for people to indulge some extreme worries last fall by asking doctors for Cipro and buying gas masks.
From the studies conducted by LeDoux we learn that
选项
A、reactions of humans and animals to dangerous situations are often unpredictable.
B、memories of significant events enable people to control fear and distress.
C、people’s unpleasant memories are derived from their feelings of fear.
D、the amygdala plays a vital part in human and animal responses to potential danger.
答案
D
解析
细节题。此题属于细节推断题。文章第一段说humans evolved with an elaborate mechanism for processing information about potential threats,而根据后面的内容At its core is…,known as the amygdala,可以推断amygdala在人对潜在危险的反应中起着重要作用。
转载请注明原文地址:https://jikaoti.com/ti/BHv7FFFM
0
考研英语一
相关试题推荐
SupposeyouryoungersisterisgoingtotheUnitedStatesforfurthereducation.Writeanaffidavitofsupportforherto1)
Inthissection,youareaskedtowriteanessaybasedonthefollowinginformation.Makecommentsandexpressyourownopinion.
Itiscommonknowledgethathealthyfoodssuchasfruitsandvegetablescontaincertainnutrientsthatpromotegoodhealth—namel
Itiscommonknowledgethathealthyfoodssuchasfruitsandvegetablescontaincertainnutrientsthatpromotegoodhealth—namel
Arepasswordsoutdated?It’sstartingtoseemlikeit.Everybodyhatesthem,andnobodycanrememberalltheonesthey’ve【C1】___
Ifyouhavehighbloodpressure,you’reingood【C1】______.Hypertensionaffects67millionAmericans,includingnearlytwo-third
Notsolongago,itwasthestuffofnightmares:youpickupthelandlinetelephoneandthere’snodialingtone.Nothing.Theph
Notsolongago,itwasthestuffofnightmares:youpickupthelandlinetelephoneandthere’snodialingtone.Nothing.Theph
ScientistshavediscoveredapowerfulantibioticinthebloodstreamofgiantpandasthatcandestroybacteriaTheChineseresea
Thehighestanxietymomentintheholidayseasonmustbethemomentjustbeforeyourlovedonesunwraptheirgifts.Theribbonc
随机试题
人们通过生活实践所形成的对人生问题的_种稳定心理倾向和基本意图是()
下列关于Windows“回收站”的叙述,正确的是______。
正常成人安静时通气/血流比值为()
26岁初产妇因宫缩乏力而以胎头吸引术结束分娩,产程26h,产后3d发烧,T38.6℃下腹痛,恶露脓血性,臭味,宫底近脐平,压痛(±)诊断为产褥感染住院。该产妇感染的主要诱因是()
乳腺癌侵犯乳房悬韧带(Cooper韧带),引起相应的体征是()
电子银行营销途径包括()。
下列各项中,应当在“其他应付款”科目核算的是()。
当一国处于经济周期中的危机阶段时,利率会不断上涨,处于较高水平。()
“其身正,不令而行;其身不正,虽令不从”这反映了教师的劳动具有()。
请在【答题】菜单中单击【考生文件夹】按钮,并按照题目要求完成下面的操作。注意:以下的文件必须保存在考生文件夹下。书娟是海明公司的前台文秘,她的主要工作是管理各种档案,为总经理起草各种文件。新年将至,公司定于2013年2月5日下午2:00
最新回复
(
0
)