首页
登录
职称英语
What if we could read the mind of a terrorist? Researchers at Northwestern U
What if we could read the mind of a terrorist? Researchers at Northwestern U
游客
2024-05-20
1
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 with electroencephalography (脑电图监视器). 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 lie detector 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 for this problem with polygraphs, P300s can at least be made more accurate by increasing the number of details you show a suspect. [br] The limitation of the P300’s "confounding factors" is likely to______.
选项
A、help uncover the truth
B、present details of a study
C、offer concealed information
D、affect the results of a study
答案
D
解析
细节推断题。本题关键在于理解定位句中的be vulnerable to意为“易受……的伤害”。定位句意为:P300很容易受被科学家称为“混淆因素”的影响。由此推断,P300的局限性会对研究结果产生重要的影响,故答案为D)。
转载请注明原文地址:https://tihaiku.com/zcyy/3602955.html
相关试题推荐
Researchershaverecentlyfoundaconnectionbetweendiseasesandstressful
【B1】[br]【B11】[originaltext]Lastyear,researcherspublishednewfindings
【B1】[br]【B9】[originaltext]Lastyear,researcherspublishednewfindings
【B1】[br]【B8】[originaltext]Lastyear,researcherspublishednewfindings
【B1】[br]【B7】[originaltext]Lastyear,researcherspublishednewfindings
【B1】[br]【B5】[originaltext]Lastyear,researcherspublishednewfindings
【B1】[br]【B4】[originaltext]Lastyear,researcherspublishednewfindings
【B1】[br]【B2】[originaltext]Lastyear,researcherspublishednewfindings
Lastyear,researcherspublishednewfindingsfromtheWomen’sHealthInitiat
[originaltext](33)Researchersreportthatdoingtwoormorethingsatonce
随机试题
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
某公司发行债券,债券面值为1000元,票面利率6%,每年付息一次,到期还本,债券
下面对李健吾的《雨中登泰山》一文分析正确的有()A.不仅描述了雨中泰山的独特风姿
食管癌手术并发症发生率是A.5.2%~24% B.40%~50% C.
急性药物过敏性间质性肾炎的治疗原则是什么?
某患者,身热已退而见肢体软弱无力,肌肉瘦削,口干咽干较甚,小便黄赤,大便干燥。舌
A.阳虚则寒B.阴损及阳C.阴盛则寒D.阴盛格阳E.阳盛格阴邪热内盛,反见寒象的
关于硝苯地平的作用特点,叙述正确的是A:对冠状动脉血管床具有选择性扩张作用 B
上市公司每股收益越多,其分红也就越多。()
外国投资者并购境内企业安全审查内容包括()。A:并购交易对社会基本生活秩序的影响
最新回复
(
0
)