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
Scientists researching hypnosis have uncovered evidence that counters some of the skepticism about the technique. One skeptical
Scientists researching hypnosis have uncovered evidence that counters some of the skepticism about the technique. One skeptical
admin
2013-02-16
96
问题
Scientists researching hypnosis have uncovered evidence that counters some of the skepticism about the technique. One skeptical hypothesis is that hypnosis may be the product of "vivid imagination", a now discredited charge stemming from the observation that many people who are hypnotizable can be led to experience compellingly realistic auditory and visual hallucinations. Nothing that an auditory hallucination and the act of imagining a sound are both self-generated and that, like real hearing, a hallucination is experienced as the product of an external source, Henry Szechtman used PET(positron emission tomography)to image the brain activity of hypnotized subjects invited to imagine a scenario and then experiencing a hallucination. By monitoring regional blood flow in areas activated during both hearing and auditory hallucination but not during simple imagining, the investigators sought to determine where in the brain a hallucinated sound is mistakenly "tagged" as authentic and originating in the outside world.
Szechtman imaged the brain activity of eight very hypnotizable subjects who had been prescreened for their ability to hallucinate under hypnosis. During the session, the subjects were under hypnosis and lay in the PET scanner with their brain activity being monitored under four conditions: at rest;while hearing an audiotape of a voice, while imagining hearing the voice again;and during the auditory hallucination they experienced after being informed that the tape was playing once more, although it was not. The tests suggested that a region of the brain called the right anterior cingulate cortex was just as active while the volunteers were hallucinating as it was while they were actually hearing the stimulus. In contrast, that brain area remained dormant while the subjects were imagining that they heard the stimulus.
The second major objection raised by critics argues that hypnosis’ ability to blunt pain results from either simple relaxation or a placebo response. McGlashan established that while hypnosis was only as effective in reducing pain as a sugar pill for poorly hypnotizable people, highly hypnotizable subjects benefited three times more from hypnosis than from the placebo. In response to these successes, Rainville devised experiments to determine which brain structures are involved in pain relief during hypnosis, attempting to locate the brain structures associated with the suffering component of pain, as distinct from its sensory aspects. Using PET, he and other scientists found that hypnosis reduced the activity of the anterior cingulate cortex—an area known to be involved in pain—but did not affect the activity of the somatosensory cortex, where the sensations of pain are processed.
Despite the value of these findings, the mechanisms underlying hypnotic pain relief are still poorly understood. The model favored by most researchers is that the analgesic effect of hypnosis occurs in higher brain centers than those involved in registering the painful sensation, accounting for the fact that most autonomic responses that routinely accompany pain—such as increased heart rate — are relatively unaffected by hypnotic suggestions of analgesia.
Which of the following best defines "higher brain centers" as the term is used in the passage?
选项
A、The parts of the brain known as the somatosensory cortex, where the sensations of pain are processed.
B、The pans of the brain whose function is to distinguish the sensory aspects of pain from it suffering aspect.
C、The parts of the brain known as the anterior cingulate cortex, whose activity is suppressed by hypnosis.
D、The parts of the brain associated with pain, which appear to be insusceptible to placebo effects.
答案
C
解析
细节题目。解题点在文章的第三段和第四段。文章在第三段中提到“he and other scientists found thathypnosis reduced the activity of the anterior cingulate cortex—an area known to be involved in pain”,在第四段中提到“…that the analgesic effect of hypnosis occurs in higher brain centers…”,不难看出“higher brain centers”指的是“the anterior cingulate cortex”,故正确的答案为C选项。
转载请注明原文地址:https://kaotiyun.com/show/1EmO777K
0
考博英语
相关试题推荐
FrancoisJacobwrotethat"anageorcultureischaracterizedlessbytheextentofitsknowledgethanbythenatureoftheques
Governmentsthatwanttheirpeopletoprosperintheburgeoningworldeconomyshouldguaranteetwobasicfights:therighttopr
TheprincipaldutyoftheUnitedNationsistosafeguardthepeaceoftheworld.
ThehistoryofAfrican—Americansduringthepast400yearsistraditionallynarrated【41】anongoingstraggleagainst【42】andindif
Travellingandmeetingnewpeople______themindofyoungpeople.
Opponentsofaffirmativeactionsaythebattleovertheuseofraceincollegeadmissionsishardlyover,despitetheSupremeCo
WhatMakesa"MillennialMind"?(1)Since1000AD,around30billionpeoplehavebeenbornonourplanet.Thevastmajorityh
Theenergycrisis,whichisbeingfeltaroundtheworld,hasdramatizedhowthecarelessuseoftheearth’sresourceshasbrough
结交朋友是为了建立一种朴素的、真诚的社交圈子,友谊就是互助,我们既可以与朋友在平静的日子中一道悠闲散步,抒发优雅的才情;也愿意与朋友一起度过坎坷的岁月。友谊不应当落入平庸与俗套当中,我们应该以勇气、智慧、力量为友谊增色。
随机试题
企业应建立采购与付款业务的()和审核批准制度。
控制标准源于()
患者男性,30岁。卒然腹中绞痛,欲吐不得吐,欲泻不得泻,烦躁闷乱,头汗出,脉沉伏,最佳治疗原则是
A.具发汗平喘作用B.具抗菌作用C.具镇痛作用D.具镇静麻醉作用E.具消肿利尿抗肿瘤作用
根据《建设工程质量管理条例》,监理工程师应当按照工程监理规范的要求,采取()等形式,对建设工程实施监理。
法律关系主体与客体的变更,必然导致( )变更。
金融期货中不包括()。
小琪今年上小学三年级,她是一个活泼开朗的小姑娘。她最喜欢的课程是数学课,在数学课上,她反应很快,喜欢尝试用新办法来解决问题。老师提问时,她总是抢先回答,但也常常答错。问题:(1)小琪属于何种认知风格?(2)基于小琪的认知风格,你认为应如
Theunderlinedpartin"Thecolderwatermadethediversworseatsimplearithmeticandothermentaltasks"isa(n)______.
Shehasa______attitudetowardthismatter.Thatmeanswecan’tdetermineonacourseofaction.
最新回复
(
0
)