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
92
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、Languagespeopleuseininternationalcommunication.B、ThepopularityofEnglishasaworldlanguage.C、ThedevelopmentofEng
EdgarPoe,anAmericanwriter,wasbornin1809.Hisparentswereactors.Edgarwasababywhenhisfatherleftthefamily.Hew
EdgarPoe,anAmericanwriter,wasbornin1809.Hisparentswereactors.Edgarwasababywhenhisfatherleftthefamily.Hew
A、Keeptheminfamily-baseddaycarecenters.B、Letthemstaywiththeirparentsorteachers.C、Askelderlyadultstoattendthe
A、Heconductslarge-scaletests.B、Hewritesbooksaboutchildren.C、Heteachesattheuniversity.D、Herecommendsbabysitters.
Negotiationsworkwonders.Thisisparticularlysoininternationalbusinesssinceitismostlythroughnegotiationsthatexport
A、Introducethewomantohisfriends.B、Getfamiliarwiththeuniversitycampus.C、Gotothetenniscourtsforanappointment.D
A、FortDearbornwasbuiltin1833intheplacethatwouldbecomeChicago.B、Chicagodidn’tofficiallybecomeatownin1893.C、O
A、HehadthoughtChicagowasayoungcity.B、HehadthoughtthatChicagowasverylarge.C、HehadthoughtthatChicagoshouldbe
随机试题
(2001年第68题)关于缺铁性贫血患者的表现,下列哪项不正确
有关急性支气管炎的治疗措施丕当的是
下列哪一个是“主津”的
下列关于金融市场作用的论述,错误的是:()。
关于工程高程控制测量的施测方法,下列说法不正确的是()。
承压特种设备最基本的检验方法是()。
下列关于建筑业企业资质申请的表述中,正确的是()。
计算机软件分为()。
根据胜任特征的结构冰山图,胜任特征的基本内容包括()。
材料一新春伊始,《新农村》记者小梁到基层调研,以下是他在南北两个乡村采访的片段。“村子真干净”,这是外来人对东各村的第一印象。村道上见不到一点儿垃圾,家家院里院外清清爽爽,79岁的高大妈笑着把小梁往屋里迎。冬季取暖,煤改电以后,高大妈家
最新回复
(
0
)