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
2021-03-22
54
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 Rosenf eld 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
细节辨认题。定位句提到,世界上还没有哪个国家把P300作为正式的执法工具,原因之一是如果调查人员不知道他们要努力确认哪些信息,就很难利用这种技术。因此,答案为B。
转载请注明原文地址:https://kaotiyun.com/show/UoJ7777K
0
大学英语六级
相关试题推荐
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethatcouldproduceunusualweatheraroundtheworldint
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
Theworld-famousBelgianhasarrivedinBritainwithhisequallyfamousdogforafive-monthstay—nearly70yearsafterhisfirs
Theworld-famousBelgianhasarrivedinBritainwithhisequallyfamousdogforafive-monthstay—nearly70yearsafterhisfirs
Internationalairlineshaverediscoveredthebusinesstravelers,themanorwomanwhoregularlyjetsfromcountrytocountryas
Tsunamis[A]UpuntilDecemberof2004,thephenomenonoftsunamiwasnotonthemindsofmostoftheworld’spopulation.Tha
AstudyconductedbyanAustralianscienceagencyhasdiscoveredsignsthatthecountry’sancientAboriginesmayhavebeenthew
AstudyconductedbyanAustralianscienceagencyhasdiscoveredsignsthatthecountry’sancientAboriginesmayhavebeenthew
Beinginchargehasitsbenefits:Moremoney,morecontrol,morepower,andapparently,morejobsatisfaction.Recentlythe
随机试题
A.防己B.桑枝C.海桐皮D.豨莶草既能祛风通络,有清热解毒的药
下述哪项不是烧伤病人抗休克补液量观察的有效指标
下列药品不属于实行管制的是
房地产权利人因()等事项应当申请房地产权属转移登记。
如果有两种要素,其中劳动产出弹性α为0.3,资本产出弹性β为0.7,劳动和资本的投入量都增长6%,无索罗余值,则经济增长率为()。
乙公司现有生产线已满负荷运转,鉴于其产品在市场上供不应求,公司准备购置一条生产线,公司及生产线的相关资料如下:材料一:乙公司生产线的购置有两个方案可供选择:A方案生产线的购买成本为7200万元,预计使用6年,采用直线法计提折旧,预计净残值率为10%,生
花茶出现于清代,以精制后的茶叶和香花为原料,经过窨花工艺制成,尤受我国北方人民喜爱。()
我国上海证券交易所市场的交易机制,根据市场微观结构划分属于()。
材料1 国家主席习近平在2020年3月23日晚同法国总统马克龙通电话中强调中法共同肩负着维护国际和地区公共卫生安全的艰巨责任,双方应精诚合作,推进联合研究项目,加强国境卫生检疫合作,支持世卫组织工作,共同帮助非洲国家做好疫情防控,努力打造卫生健康共同体
Tommydidn’tlikeschoolandwasalwayslookingforexcusesnottogo.Hespentmoretimeathomethanhedidatschool.Onthe
最新回复
(
0
)