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
59
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,youareallowed30minutestowriteashortessayentitledCampusSafety.Youshouldwriteatleast150wordsbut
Forthispart,youareallowed30minutestowritealetterapplyingforadmissionintoacollegeoruniversity.Youshouldwrit
Inlastyear’sSciencestudy,researchersatJohnsHopkinsUniversityexaminedtherelationshipbetweenstem-celldivisionsand
A、Shehadtroublebalancingfamilyandwork.B、Sheenjoyedthevarioussocialevents.C、Shewasaccustomedtotightschedules.D
A、Universitysystemsvaryfromcountrytocountry.B、Efficiencyisessentialtouniversitymanagement.C、Itishardtosaywhich
A、Itinvolved13,000researchersfromAsia,EuropeandAmerica.B、ItwasconductedinsevenMid-Easterncountriesinthe1950s.
A、Whentheirchildrengrowupandleavehome.B、Whentheyhavesavedenoughforretirement.C、Whentheirfamilymovetoadiffer
A、Consequencesofaccidents.B、Communicationsindriving.C、Lossoflifeinaccidents.D、Useofmobiledevices.D录音提到,移动通讯与驾驶中注意
1.有人认为,大学的价值在于向学生传授知识2.有人认为,大学的价值在于培养学生完善的人格和独立思考的能力3.我的观点
随机试题
经行泄泻的临床表现下列哪些是正确的
A.黄连温胆汤B.半夏秫米汤C.黄连阿胶汤D.天王补心丹E.安神定志丸治疗心胆气虚之失眠者,宜选用
李某,女,36岁。胃脘胀痛经治疗后未见好转,而见胃脘灼痛,痛势急迫,烦躁而怒,泛酸嘈杂,口干口苦,舌红苦黄,脉弦数。治疗宜( )。
根据《建筑抗震设计规范》(GB50011—2001),在选择场地时,应对抗震有利、不利和危险地段作出综合评价。下列说法正确的是( )。
负债类账户的增加数登记在( )。
某易损商品,投保时规定免赔率为3%,运输中实际损失达5%,保险公司应赔()
甲委托乙为自己的代理人,授权乙代为购买一台冰箱,乙亲自购买了一台冰箱。他们之间的代理关系属于()。
马斯洛需求层次理论说明在某种程度上学生缺乏学习动机,可能是由于某种()需要没有得到充分满足而引起的。
对外开放是一项涉及面十分广泛的基本国策,其基本点是()。
太空垃圾是人类空间活动产生的空间碎片。近年来,各国留在太空中的垃圾越来越多,甚至已经逼近“临界点”,而且它们可以通过彼此碰撞“自我繁殖”。太空垃圾的飞行速度约为78千米/秒,能威胁在舱外活动的航天员。此外,如果撞击到航天器表面,轻者会留下凹坑,重者会穿透航
最新回复
(
0
)