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
2019-04-30
130
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 Rosenfeld 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.
How can the P300 be made more accurate?
选项
A、By measuring responses like respiration and sweating.
B、By triggering a lie or getting rid of any high-stress situation.
C、By eliminating the interrogation of the police.
D、By presenting more details to a suspect.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/HhX7777K
0
大学英语六级
相关试题推荐
A、Takerupherfirstjobatschool.B、Spendhersummerholiday.C、StudyforherMaster’sdegree.D、Studyasanexchangestudent.
Somethingveryunusualhappenedabout80,000yearsago,asEarth’slasticeagewasgettingstarted.Sealevelsthathadbeendr
TheBeautyAdvantage[A]MostofushaveheardthestoryofDebrahleeLorenzana,the33-year-oldQueens,N.Y.,womanwhosuedCi
Westerndoctorsarebeginningtounderstandwhattraditionalhealershavealwaysknown,thatthebodyandthemindareinseparab
Waterscootersarewatervehiclesthatlookverymuchlikemotorcycles.Nowadaysspeedycolorfulwaterscootersare【B1】______pop
Englishistheleadinginternationallanguage.Indifferentcountriesaroundtheglobe,Englishisacquiredasthemothertongue
A、Diamond-producingriversaredisappearingbecauseofclimatechange.B、Diamondcouldn’tbeformedwithoutgreatheatandpress
ThePublicHealthCrisisHidinginOurFood[A]Ifyouhavehighbloodpressure,you’reingoodcompany.Hypertension(高血压)affl
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
TheIndustrialRevolution[A]TheIndustrialRevolutionisthenamegiventothemassivesocial,economic,andtechnologicalcha
随机试题
商业习惯
长期肠外营养支持者,应选择的穿刺血管是
给药个体化的第一步是
房地产经纪人员在对拟出售房屋进行实物状况查看时,必须注意的事项不包括()。
()不能关闭Word2003。
甲股份有限公司(以下简称甲公司)成立于2003年9月3日,公司股票自2005年2月1日起在深圳证券交易所上市交易。公司章程规定,凡投资额在2000万元以上的投资项目须提交公司股东大会讨论决定。乙有限责任公司(以下简称乙公司)是一软件公司,甲公司董事李某为其
下列属于事业单位聘用合同必备条款内容的是()。
你新分到一个派出所工作。发现所长和指导员有矛盾,又分别得到部分干警的支持,暗中形成两派,有的老同事暗示你要支持谁反对谁。对此。你怎么想。又怎么办?
设三阶矩阵A的特征值为﹣2,0,2,则下列结论不正确的是().
Whydidn’tthegirlgotothemovies?
最新回复
(
0
)