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
64
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
eBay[A]eBayisaglobalphenomenon—theworld’slargestgaragesale,onlineshoppingcenter,cardealerandauctionsitewit
Anewstudyfindsthatevenmildstresscanaffectyourabilitytocontrolyouremotions.AteamofneuroscientistsatNewYork
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethatcouldproduceunusualweatheraroundtheworldint
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
Internationalairlineshaverediscoveredthebusinesstravelers,themanorwomanwhoregularlyjetsfromcountrytocountryas
Internationalairlineshaverediscoveredthebusinesstravelers,themanorwomanwhoregularlyjetsfromcountrytocountryas
FrustratedwithdelaysinSacramento,BayAreaofficialssaidThursdaytheyplannedtotakemattersintotheirownhandstoregu
AstudyconductedbyanAustralianscienceagencyhasdiscoveredsignsthatthecountry’sancientAboriginesmayhavebeenthew
A、Hethinksitisagreatideatohaveadrivelesscar.B、Hethinksitisbettertotakebackcontrolofadrivelesscar.C、Het
随机试题
关于《集成电路布图设计保护条例》的主要内容,下列选项正确的是()。
ThesamebenefitsanddrawbacksarefoundwhenusingCTscanningtodetectlungcancer—thethree-dimensionalimaging,improve
不属于全麻药物的是
案情:张某与王某因口角发生扭打,张某将王某打成重伤。检察院以故意伤害罪向法院提起公诉,被害人王某同时向法院提起附带民事诉讼。(卷四真题试卷第3题)问题:如果法院受理了附带民事诉讼,根据我国《刑事诉讼法》及司法解释相关规定,对一审过程中附带民事诉讼的调解
(2006)以下哪项不属于施工图设计必须交付的设计文件?
材料:一位语文教师在给学生上《师说》一课,当介绍到作者是“唐宋八大家”之一时,学生问:“老师,唐宋八大家,都是哪些人呀?”教师脸一板,冷若冰霜地说:“就你多事,那不是你要学的范围,你只要记住韩愈是八大家之一就行了。”一句话把大家说得目瞪口呆。问题:请从教学
未来学家尼葛洛庞蒂说“预测未来的最好办法就是把它创造出来。”从认识与实践的关系来看,这句话给我们的启示是()。
火车渐渐远去,他站在站台上,根据此情境编故事。
设,则()
Evenat87,John’smother-in-lawhas______herphysicalenergyandyouthfulattitude.
最新回复
(
0
)