首页
登录
职称英语
In a purely biological sense, fear begins with the body’s system for reactin
In a purely biological sense, fear begins with the body’s system for reactin
游客
2023-08-22
64
管理
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(神经元)deep in the brain known as the amygdala(扁桃核).
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 facts 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(抗炭疽菌的药物)and buying gas masks. [br] 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
转载请注明原文地址:http://tihaiku.com/zcyy/2947473.html
相关试题推荐
"Iwanttocriticizethesocialsystem,andtoshowitatwork,atitsmost
"Iwanttocriticizethesocialsystem,andtoshowitatwork,atitsmost
"Iwanttocriticizethesocialsystem,andtoshowitatwork,atitsmost
"Iwanttocriticizethesocialsystem,andtoshowitatwork,atitsmost
"Iwanttocriticizethesocialsystem,andtoshowitatwork,atitsmost
Biologically,thereisonlyonequalitywhichdistinguishesusfromanimals:
Biologically,thereisonlyonequalitywhichdistinguishesusfromanimals:
TheAmericaneconomicsystemisorganizedaroundabasicallyprivateenterpr
TheAmericaneconomicsystemisorganizedaroundabasicallyprivateenterpr
TheAmericaneconomicsystemisorganizedaroundabasicallyprivateenterpr
随机试题
•Lookatthenotesbelow.•Someinformationismissing.•YouwillhearPeterDud
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
可乐定的降压机制是A.激动中枢的咪唑啉受体 B.影响递质的释放功能 C.激动
A.快速车道 B.慢速车道 C.应急车道 D.专用车道
谷类食品蛋白质的第一限制氨基酸是A.蛋氨酸 B.苏氨酸 C.色氨酸 D.亮
清末新政未能挽救清朝灭亡命运的根本原因是()A.“新政”只是一场骗局,并没有
组成蛋白质的氨基酸中,亲水的酸性与碱性氨基酸分别是A.2种和3种 B.3种
第二题、“给定资料4”中谈到一些地方的官方网站、官方微博没有起到应有的作用。请据
某癫痫患者在接受西药抗癫痫药治疗后,可联用某些具有抗癫痫作用的中药复方,以降低西
投资项目可行性研究阶段建设方案研究的主要内容通常包括() A.建设规模方
最新回复
(
0
)