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
17
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] The "so-called fight-or-flight response"(Lines 1-2, Para. 1)refers to "______".
选项
A、the biological process in which human beings’ sense of self-defense evolves
B、the instinctive fear human beings feel when faced with potential danger
C、the act of evaluating a dangerous situation and making a quick decision
D、the elaborate mechanism in the human brain for retrieving information
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2947472.html
相关试题推荐
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate【B1】_____
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate【B1】_____
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate【B1】_____
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate【B1】_____
TheAmerican【C1】______system,isorganizedaroundabasicallyprivate-enterp
TheAmerican【C1】______system,isorganizedaroundabasicallyprivate-enterp
TheAmerican【C1】______system,isorganizedaroundabasicallyprivate-enterp
TheAmerican【C1】______system,isorganizedaroundabasicallyprivate-enterp
TheAmerican【C1】______system,isorganizedaroundabasicallyprivate-enterp
TheAmerican【C1】______system,isorganizedaroundabasicallyprivate-enterp
随机试题
SheAlooksforwardBeveryspringtoCwalkintheDflower-linedgarden.A、 B
MakeThataDoubleAfewyearsago,itdawnedonZachThomasthatcoffee
Puttingfeelingsintowordsmakessadnessandangerlessintense,U.S.brain
一类高层民用建筑自备发电设备,应设有自动启动装置,并能在()s内供电。A
女性,75岁,有高血压病史30年,在进行家务活动时,突觉头晕,随即倒地,急送医院
在下列有机物中,经催化加氢反应后不能生成2-甲基戊烷的是( )。
下列关于蒙特卡洛模拟法的说法中正确的是()。A.通过产生一系列同模拟对象具有相
A.山药 B.炙甘草 C.菟丝子 D.蛇床子 E.血余炭与地肤子不能放于
无铰链区的免疫球蛋白是A.IgG、IgD B.IgA、IgG C.IgG、I
(2012年真题)下列设备中,属于特种设备的有()A.6层6站乘客电梯
最新回复
(
0
)