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
2017-04-29
40
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 with electroencephalography(脑电图). 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.
The limitation of the P300’s "confounding factors" is likely to______.
选项
A、help uncover the truth
B、present details of a study
C、offer concealed information
D、affect the results of a study
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/aRU7777K
0
大学英语六级
相关试题推荐
A、HewasborninNewEngland.B、HeonceworkedforHarvardUniversity.C、HewasEdwardThomas’friend.D、Hewasn’tawardedanyp
A、Sheistheorganizer.B、Sheiscontributingtosomepartofit.C、SheistheheadoftheAlumniAssociation.D、Shewasastude
A、TheUniversityfaculty.B、TheStudentAssociation.C、TheAlumniAssociation.D、ThePresidentoffice.C女士说组织该活动的是校友联合会,故选C。听到什么
A、Keeptheminfamily-baseddaycarecenters.B、Letthemstaywiththeirparentsorteachers.C、Askelderlyadultstoattendthe
A、Heconductslarge-scaletests.B、Hewritesbooksaboutchildren.C、Heteachesattheuniversity.D、Herecommendsbabysitters.
Negotiationsworkwonders.Thisisparticularlysoininternationalbusinesssinceitismostlythroughnegotiationsthatexport
Negotiationsworkwonders.Thisisparticularlysoininternationalbusinesssinceitismostlythroughnegotiationsthatexport
A、HesetupthefirstuniversityinAmerica.B、HewasoneoftheearliestsettlersinAmerica.C、Hecanbestrepresentthespiri
A、TheywillreviewtheseminarthisweekonChicagotogether.B、TheywillattendMr.Johnson’sseminaragain.C、Theywillattend
北京大学于1898年成立,原名为京师大学堂(theImperialUniversityofPeking)。该大学的成立标志着中国近代史上高等教育的开始。在中国近代史上,它是进步思想的中心,对中国新文化运动、五四运动及其他重要事件的发生颇有影响。今天
随机试题
任何知识都可以教给任何年龄的学生,这违背了个体身心发展的()。
深入访谈法的最大特点是
重度肺动脉高压时,室间隔缺损分流方向主要为
简述诉讼时效的概念和特征。
赵某与王某发生借贷纠纷,赵某2010年9月14日向法院起诉,并向法院提供证人甲,甲说他亲眼见到赵某与王某签订借款合同.还款日期是2010年5月17日。王某向法院提交赵某亲笔所写的收条原件一张:并提供证人乙,乙说他听说王某已经将钱还给赵某。根据本案情况,下列
()是决定设备概念质量的基础。
按照《工伤保险条例》规定,劳动能力鉴定委员会应当自收到劳动能力鉴定申请之日起()日内做出劳动能力鉴定结论,特殊情况下可以延长30日。
“从生活走向物理,从物理走向社会”,是《义务教育物理课程标准(2011年版)》的基本理论之一。结合初中物理教学实例简述倡导“从生活走向物理,从物理走向社会”的意义。
某商品需求量Q对p的弹性εp=(0<p<b),又知该商品的最大需求量为a(a>0),求需求量Q对价格p的函数关系.
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
最新回复
(
0
)