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
What if we could read the mind of a terrorist? Researchers at Northwestern University in Chicago say they have taken a step clos
What if we could read the mind of a terrorist? Researchers at Northwestern University in Chicago say they have taken a step clos
admin
2021-03-22
32
问题
What if we could read the mind of a terrorist? Researchers at Northwestern University in Chicago say they have taken a step closer to that reality with a test that could uncover evil plans by measuring brain waves.
In a study published in the journal Psychophysiology, psychologists John Meixner and Peter Rosenfeld used electrodes (电极) to measure the brain waves of 29 undergraduates who had been told to mock-plan either a terrorist bombing in Houston in July, or a vacation in a different city in a different month. The researchers then presented the students with the names of various cities, methods of terrorist attack and dates. As they did so, they scanned the subjects’ brains. They watched for a particular brainwave—dubbed the P300, because it fires every 300 milliseconds— which signals recognition of something familiar.
"The P300’s amplitude (振幅) is very large when you see an object that is rare and personally meaningful to you," Meixner says. "So the amplitude of P300 was large when we presented the word ’Houston’, the city where the attack was planned. In total we were able to identify 10 out of 12 ’terrorists’". The investigators also correctly matched 20 out of 30 crime-related details, such as types of explosives and specific sites and dates.
The P300’s potential as a method for confirming concealed information was first recognized in the 1980s. But while it has long been touted as a possible substitute for the polygraph test, it has yet not been used by law enforcement anywhere in the world. One of the reasons is that it becomes difficult to use if investigators do not know the information they are trying to confirm. For instance, in Meixner and Rosenfeld’s study, the researchers would have struggled had they not known that the city in which the attack was planned was Houston, since it would be only by luck or guesswork they would have included it in the sample list of names.
What’s more, the P300 is vulnerable to what scientists call "confounding factors". For instance, if the mock-terrorists in the study were raised in Houston, which was also the location of the attack, the researchers would not know for sure what was causing the P300 spike.
But Meixner and Rosenf eld say that despite these shortfalls, the technology holds more potential than the polygraph. The polygraph measures responses like respiration and sweating, which can certainly be triggered by a lie, but can also result from any high-stress situation—including the mere experience of being interrogated by a police officer. While there is nothing that can correct this problem with polygraphs, P300s can at least be made more accurate by increasing the number of details you show a suspect.
What can we learn about the P300 from the research by John Meixner and Peter Rosenfeld?
选项
A、It is related to a person’s reaction to stimulus.
B、It is widely used in polygraph tests.
C、It fires when an insignificant stimulus is given.
D、It is 100 percent accurate in the laboratory.
答案
A
解析
推理判断题。第二段介绍两位心理学家通过对29名大学生脑电波的扫描确认了很多犯罪细节。由定位句可知,通过观察P300这种脑电波,他们发现受试者认出了某种熟悉的东西。由此推断,P300是人脑对外界刺激的一种反应。因此,答案为A。
转载请注明原文地址:https://kaotiyun.com/show/ToJ7777K
0
大学英语六级
相关试题推荐
Birdsthatareliterallyhalf-asleep—withonebrainhemispherealertandtheothersleeping—controlwhichsideofthebrainrema
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethatcouldproduceunusualweatheraroundtheworldint
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
SouthAfricaSafariTopFiveNationalParksandGameReserves[A]ASouthAfricasafari(游猎)istheidealwildlifetriptogoo
SouthAfricaSafariTopFiveNationalParksandGameReserves[A]ASouthAfricasafari(游猎)istheidealwildlifetriptogoo
Theestimatesofthenumbersofhome-schooledchildrenvarywidely.TheU.S.DepartmentofEducationestimatesthereare250,00
Theestimatesofthenumbersofhome-schooledchildrenvarywidely.TheU.S.DepartmentofEducationestimatesthereare250,00
A、Tohaveathree-weekholiday.B、Tospendhisremainingyears.C、Topatenthisinventions.D、Toteachatauniversity.D
随机试题
A.孕母有菌血症B.阴道细菌上行C.脐部感染D.消化道入侵E.黏膜破损新生儿败血症的产时感染的途径是
在下列各种心肌细胞动作电位的形成过程中,有Ca2+内流参与的是
突然发作上腹部钻顶样疼痛是胆道蛔虫病的典型表现。()
项目风险分解的()是按项目建设的阶段对风险进行分解。
下列有关账户的表述中,不正确的是()。
在配送系统整体规划中,()的设计与规划是最关键的。
3,8,23,68,(),608
A、 B、 C、 D、 B
在整个结构化方法的出发点和实施步骤中,十分强调用户的______。
有如下程序:#includeusingnamespacestd;classMyClass{public:MyClass(){cout
最新回复
(
0
)