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
医学
Folk wisdom holds that the blind can hear better than people with sight. Scientists have a new reason to believe it. Researc
Folk wisdom holds that the blind can hear better than people with sight. Scientists have a new reason to believe it. Researc
admin
2013-10-31
96
问题
Folk wisdom holds that the blind can hear better than people with sight. Scientists have a new reason to believe it.
Research now indicates that blind and sighted people display the same skill at locating a sound’ s origin when using both ears, but some blind people can home in on sounds more accurately than their sighted counterparts when all have one ear blocked. Canadian scientists described the work in the Sept. 17 NATURE.
Participants in the study were tested individually in a sound-insulated room. They faced 16 small, concealed loudspeakers arrayed in a semicircle a few feet away. With a headrest keeping their heads steady, the participants pointed to the perceived origins of the sounds.
The researchers tested eight blind people, who had been completely sightless from birth or since a very early age. They also tested three nearly blind persons, who had some residual vision at the periphery of their gaze; seven sighted people wearing blindfolds; and 29 sighted people without blindfolds. All participants were tested beforehand to ensure that their hearing was normal.
When restricted to one-ear, or monaural, listening, four of the eight blind people identified sound sources more accurately than did the sighted people, says study co-author Michel Pare, a neuroscientist at the University of Montreal. The sighted people showed especially poor localization of sounds from the speakers on the side of blocked ear.
In sighted people who can hear with both ears, " the brain learns to rely on binaural [ stereo ] cues. These data suggest that blind people haven’ t learned that and keep monaural cues as the dominant cues," says Enc I. Knudsen, a neurobiologist at Stanford University School of Medicine, "I find it surprising. "
One thing is sure that the participants in the study______.
选项
A、had normal hearing
B、were bom blind
C、wore blindfolds
D、were divided into two groups
答案
A
解析
第一段指出研究的目的是确定是否the blind can hear better than people with sight,由此可知研究的参与者肯定都是有听觉的。
转载请注明原文地址:https://kaotiyun.com/show/ahU3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
A.HBsAgB.HBeAgC.抗HBsD.抗Hbe与乙肝疫苗成分一致的是
Itusedtobethatacorporation’scapitalconsistedoftangibleassetssuchasbuildings,machines,andfinishedgoods.But,
Despitegrowingnumbersofjoggers,CanadaFitnessSurveysacrossthecountrydemonstratethatCanadiansarelessphysicallyfit
A、Thediaristswhowriteoftheirfreewill.B、ThediaristswhowerestudentsatStaffordshireUniversity.C、Thediaristswhoha
A、Porridge.B、Purifiedwater.C、Pizza.D、Applejuice.C女士建议男士drinkalotofwaterandfruitjuice,一天不要吃饭,稍微吃一些柔软的食物,例如porridgec
TherewereredfacesatoneofBritain’sbiggestbanksrecently.Theyhadacceptedatelephoneordertobuy$100,000worthof
InMr.Allen’shighschoolclass,allthestudentshaveto"getmarried".However,theweddingceremoniesarenotrealonesbut
Aresmartpeoplejustnaturallyattractedtostudyartorperformmusic,dance,ordrama?Ordoesearlyeducationintheartact
Havingafewtoomanydrinkscanmeanmorethanjustablackoutorabadhangover.Peoplewhoengageinbingedrinkingarecourt
Lightinglevelsarecarefullycontrolledtofallwithinanacceptablelevelforoptimalreadingconvenience.
随机试题
干粉灭火器适用于扑灭油气、草木等一般性火灾。()
群体极化
A.手阳明大肠经B.手太阳小肠经C.足太阳膀胱经D.足阳明胃经联系目系的经脉是
根据业务类型的不同,商业性金融机构被分为()。
某企业近年来由于技术革新,产品销路逐年扩展,原有的供应商满足不了生产的需要,决定再选择新的原料供应商。企业采购部门过去一般采用协商选择的方法,这次决定采用招标方法,采购部门提出了招标条件,但对投标者的资格不预限制。只要符合招标条件的供应商都可竞标,企业从中
按照企业会计准则规定,在成本与可变现净值孰低法下,对成本与可变现净值进行比较确定当期存货跌价准备金额时,一般应当()。
我国海滨胜地中有“不是夏威夷,胜似夏威夷”之誉的是()海滨。
我国现行宪法规定,必须由实行区域自治的民族的公民担任的职务不包括:
Despitetheirmanydifferencesoftemperamentandofliteraryperspective,Emerson,Thoreau,Hawthorne,Melville,andWhitmansh
AYourpassport.BYourchildren’spassports.CYourPoliceRegistrationCertificate.DAletterfromyourcollege
最新回复
(
0
)