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
2020-02-09
69
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.
What can we learn about the P300 from the research by John Meixner and Peter Rosenfeld?
选项
A、It is related to a person’s reaction to stimulus.
B、It is widely used in polygraph tests.
C、It fires when an insignificant stimulus is given.
D、It is 100 percent accurate in the laboratory.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/McW7777K
0
大学英语六级
相关试题推荐
Webuybooks,andthentheywaitforustoreadthemDays,months,evenyears.Booksare【C1】______That’sOKforbooks,butnotf
Thedestructionofournaturalresourcesandcontaminationofourfoodsupplycontinuetooccur,largelybecauseoftheextreme
FeedingtheMassesaLoadofManureTheGreenRevolutionMyth,NormanBorlaug,andWorldHunger[A]Mostpeopledon’tkno
Highstreetshopsuseavarietyofmeanstoattractshoppers,suchasstrikingwindowdisplays,hugered"Sale"signsandspecia
AskmostpeoplehowtheydefinetheAmericanDreamandchancesarethey’llsay,"Success."Thedreamofindividualopportunityh
A、Togotoschool.B、Totakeuniquepictures.C、Tovisithisrelatives.D、Tomakeexplorations.A
Moneycanbuyhappiness,butonlyifyouspenditonsomeoneelse,researchersreported.Spendingaslittleas$5adayons
Moneycanbuyhappiness,butonlyifyouspenditonsomeoneelse,researchersreported.Spendingaslittleas$5adayons
AreTeenagersReallyCarelessAboutOnlinePrivacy?[A]Theyshare,like,everything.Howtheyfeelaboutasong,theirmathshom
Ofallthe【C1】______ofagoodnight’ssleep,dreamsseemtobeleastwithinourcontrol.Indreams,awindowopensintoaworld
随机试题
某水利工程施工招标文件依据《水利水电工程标准施工招标文件》(2009年版)编制。投标前,投标人召开了投标策略讨论会,拟采取不平衡报价。下列观点符合不平衡报价适用条件的有()。
假定单元格D2中保存的公式为“=B2+C2”,若把它移动到E3中,则E3中保存的公式为()
A、 B、 C、 D、 C
患者,男,18岁。恶寒发热,头痛身痛,无汗而喘,舌苔薄白,脉浮紧。治疗应首选()
丁英、李民以色情为诱饵索取、敲诈他人钱财,是构成抢劫罪还是敲诈勒索罪?吴华构成何罪?
(2012年)某服装厂为增值税一般纳税人,增值税率17%,退税率16%。2011年11月外购棉布一批,取得的增值税专用发票注明价款200万元,增值税34万元,货已入库。当月进口料件一批,海关核定的完税价格25万美元.已按购进法向税务机关办理了《生产企业进料
()是指某一行业内企业的固定成本和可变成本之间的比例。
陕西省境内的仰韶文化遗址主要有______、西安半坡遗址、______等。
下列各项中,可以对WAV文件进行各种处理的波形声音处理软件是(11)_________。
A、Thebank.B、Thecarpark.C、Thelake.D、Theoffice.CM:Excuseme,couldyoutellmehowIfindBauhausPlaza?W:BauhausPlaz
最新回复
(
0
)