首页
登录
职称英语
What if we could read the mind of a terrorist? Researchers at Northweste
What if we could read the mind of a terrorist? Researchers at Northweste
游客
2023-08-08
31
管理
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. [br] 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
推理判断题。第二段介绍两位心理学家通过对29名大学生脑电波的扫描确认了很多犯罪细节。由定位句可知,通过观察P300这种脑电波,他们发现受试者认出了某种熟悉的东西。由此推断,P300是人脑对外界刺激的一种反应。因此,答案为A。
转载请注明原文地址:https://tihaiku.com/zcyy/2908315.html
相关试题推荐
Inlastyear’sSciencestudy,researchersatJohnsHopkinsUniversityexami
Inlastyear’sSciencestudy,researchersatJohnsHopkinsUniversityexami
Inlastyear’sSciencestudy,researchersatJohnsHopkinsUniversityexami
Inlastyear’sSciencestudy,researchersatJohnsHopkinsUniversityexami
Inlastyear’sSciencestudy,researchersatJohnsHopkinsUniversityexami
Whatifwecouldreadthemindofaterrorist?ResearchersatNorthwesternUn
Whatifwecouldreadthemindofaterrorist?ResearchersatNorthwesternUn
Whatifwecouldreadthemindofaterrorist?ResearchersatNorthwesternUn
Aftertheterroristattack,tourists_______________________(被劝告暂时不要去该国旅游).were
[originaltext]ResearchersatStanfordUniversityhavedevelopedanewmater
随机试题
It’sreportedbysomescientiststhatphysicalsurroundings______people’semotio
Howmanybookshasthewriterwrittensofar?[br][originaltext]Host:AndIwa
Aristotledefinedafriendas"asinglesouldwellingintwobodies".Member
一家建筑工程公司准备裁员。下列人员中不得解除劳动合同的有()。A:女职工赵某,
白血病联合化疗时应注意哪些事项A.当粒细胞
患者慢性肾炎10余年,近日浮肿,头晕,乏力,呕吐,尿少。查体:血压150/100
如果供应链的各个节点企业只根据来自相邻的下游企业的需求信息进行生产或供应决策,需
某建筑高度24m的二级耐火等级办公建筑与建筑高度为32.5m的住宅建筑相邻,相邻
学习“直角角形是一种特殊的三角形”,这种学习属于() A.词汇学习B.符号学
某上市公司2018年的营业额为15亿元,息税前利润为3.2亿元,公司的资产总额为
最新回复
(
0
)