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
112
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.
How can the P300 be made more accurate?
选项
A、By measuring responses like respiration and sweating.
B、By triggering a lie or getting rid of any high-stress situation.
C、By eliminating the interrogation of the police.
D、By presenting more details to a suspect.
答案
D
解析
细节辨认题。由定位句可知,提高P300准确性的一个方法是增加出示给嫌疑人的细节的数量。D是对定位句的同义转述,故为答案。
转载请注明原文地址:https://kaotiyun.com/show/GoJ7777K
0
大学英语六级
相关试题推荐
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
Internationalairlineshaverediscoveredthebusinesstravelers,themanorwomanwhoregularlyjetsfromcountrytocountryas
FrustratedwithdelaysinSacramento,BayAreaofficialssaidThursdaytheyplannedtotakemattersintotheirownhandstoregu
AstudyconductedbyanAustralianscienceagencyhasdiscoveredsignsthatthecountry’sancientAboriginesmayhavebeenthew
AstudyconductedbyanAustralianscienceagencyhasdiscoveredsignsthatthecountry’sancientAboriginesmayhavebeenthew
A、Heinventedtherefrigerator.B、Hepatentedhisfirstinvention.C、Hewasadmittedtoauniversity.D、HegotadegreeinMathe
Beinginchargehasitsbenefits:Moremoney,morecontrol,morepower,andapparently,morejobsatisfaction.Recentlythe
随机试题
T细胞的TCR识别的MHC分子部位是
肾的被膜,由内向外依次是
A.溶解氧B.生化需氧量C.化学耗氧量D.悬浮物E.混浊度一定时间和温度下,水体中有机污染物受微生物分解所耗去水体溶解氧的总量()
一男士45岁,平日不嗜烟酒、爱运动。性格平和,过分容忍,常顺从于别人。有时办事无主见,从不表现出愤怒、不满等不良情绪。一月前体检发现患有胃癌,做手术将胃大部切除。术后情绪低落,对各种事的兴趣下降,有悲观厌世之念。
纳税人自觉纳税表明纳税人自觉遵守税法,是法制观念强的表现,不能以此否定税收的()。
某商业广场首层为超市,设置了12个安全出口。超市经营单位为了防盗封闭了10个安全出口。根据《中华人民共和国消防法》,消防部门在责令超市经营单位改正的同时,应当并处()。
确实地相信叫_________;非常地相信叫_________;坚决地相信叫_________;忠实地信仰叫_________。填入画横线部分最恰当的一项是:
某公司拟发行8年期债券进行筹资,债券票面金额为1200元,票面利率为10%,当时市场利率为10%,计算以下两种情况下该公司债券发行价格应为多少才是合适的。(1)单利计息,到期一次还本付息。(2)每年付息一次,到期一次还本。
在中国历史上,鲜卑、契丹、金人和满族,都起源于()平原。
A:Hi.Tom.Howareyou?B:Notverygood.A:Sorry.【24】【25】【26】(怎么了)?B:Idon’tknow.ThesedaysIalwayshave
最新回复
(
0
)