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
2020-09-03
62
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.
Why has the P300 not been used by law enforcement in even one country?
选项
A、Because it has not proved to be a reliable way of getting information.
B、Because information to be confirmed should be exact.
C、Because suspects’ relatives need to be involved in the process.
D、Because the technology is too sophisticated to be put into practice.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/FPP7777K
0
大学英语六级
相关试题推荐
Forthispart,youareallowed30minutestowriteacompositionentitledTheGradualLossofTraditionalCulture.Youshouldwr
Forthispart,youareallowed30minutestowriteacompositionentitledCanCollegeStudentsLiveTogether?Youshouldwritea
WriteacompositionentitledShouldChildrenBringCellPhonestoSchool?Youshouldwriteatleast150wordbutnomorethan
TheUnitedStateshasamajorproblemonitshands.Theonlywaytosolveitisthrougheducation.Negroes(黑人)shouldknowabout
A、22percentofmoviedirectorswerepeopleofcolor.B、HalfoftheTVprogramswereethnicallybalanced.C、Onlyone-fifthofTV
A、Hersupporterspaidthefamilyofthemanshekilled.B、ShegothelpfromtheInternationalLaborOrganization.C、Shearguedt
为了满足广大人民群众日益增长的体育需求,也为了纪念北京奥运会成功举办,中国政府宣布每年的8月8日为“全民健身日”(NationalFitnessDay),以推动全民健身,增强国民体质。随着社会的发展,人们锻炼的方式也变得更加多样化。老年人通常在早晨聚集
Cansocietiesberichandgreen?[A]"Ifoureconomiesaretoflourish,ifglobalpovertyistobeeliminatedandifthewell-bei
A、Smallcompanies.B、Industrialists.C、Tradeunions.D、Theyoungergeneration.B短文提到,工业家们并不反对政府这些计划,他们承认,缩减工作时间会帮助他们减少成本。由此可推知,工
随机试题
角膜接触镜的并发症有
在某温度时,下列体系属于缓冲溶液的是()。
根据《全国主体功能区规划》,优化开发区域的发展方向和开发原则包括()。
对于结构施工、安装装饰装修阶段,防治扬尘污染的规定,下列说法正确的是()。
下列属于设备基础常见质量通病是()。
永续年金是一组在无限期内金额()、方向()、时间间隔()的现金流。
赊销在企业生产经营中所发挥的作用有()。
转让国有土地使用权、地上的建筑及其附着物并取得收入的(),都是土地增值税的纳税义务人。
阅读下面短文,回答问题。利用机会就是乘时;机会稍纵即逝,所以__________而__________以外,还该__________而__________。治生或者说致富的过程,在那时有三个阶段:第一,“无财作力”,以劳力赚钱。稍有积蓄,便是第二
己知一批袋装食品的重量服从正态分布,从中分别抽取样本量为20,50,100的样本,当样本量增大时,样本均值的标准差()。[江苏大学2011研]
最新回复
(
0
)