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
考研
To function well in the world, people need a good sense of where their body is in space and how it’s postured. This "position se
To function well in the world, people need a good sense of where their body is in space and how it’s postured. This "position se
admin
2022-11-25
86
问题
To function well in the world, people need a good sense of where their body is in space and how it’s postured. This "position sense" helps us coordinate high-fives, boot a soccer ball or pick up the remote. But that doesn’t seem to mean that our brains have an accurate sense of our body’s precise proportions. A new study found that people tend to have rather inaccurate mental models of their own hands.
When asked to estimate where the fingertips and finger joints of their hidden hands were, study volunteers were way off. But they were all incorrect in the same directions, guessing that their hands were both shorter and wider than they actually were. The findings come from a study led by Matthew Longo of the Institute of Cognitive Neuroscience at University College London. "Our results show dramatic distortions of hand shape, which were highly consistent across participants," Longo said in a prepared statement.
He and his co-author, Patrick Haggard, had subjects place their left hand on a platform (using different orientations in different groups), which was then covered with a board to obscure the hand. The subjects were asked to use their free right hand point with a stick to the location of each finger joint and fingertip of their left hand. The process was filmed and compared to before and after pictures of the hand. On average, the volunteers judged their hands to be 27.9 percent shorter and 69 percent wider than they were measure to be. Underestimation of each finger length, from the thumb to the little finger, increased by about 7 percent in each finger, rendering the little finger quite a bit littler than it really was.
This trend "mirrors similar grades of decreasing sensory acuteness," the authors pointed out, and the results seem to back up models of the human body constructed from the amount of sensory cortex dedicated to various body parts. In these models the hands and face are disproportionately large in comparison to most of the body. But Longo and Haggard are still not sure why the brain has such a distorted perception of our hand proportions.
Longo speculated that these disproportions might occur in other parts of the body as well. "These findings may well be relevant to psychiatric conditions involving body image such as anorexia nervosa, as there may be a general bias toward perceiving the body to be wider than it is," Longo said. "Our healthy participants had a basically accurate visual image of their own body, but the brain’s model of the hand underling position sense was highly distorted. This distorted perception could come to dominate in some people, leading to distortions of body image."
According to Longo and Haggard, the reason for inaccurate sense of hand shape is ________.
选项
A、sensory cortex
B、sensory acuteness
C、body models
D、still unknown
答案
D
解析
根据题干中的Longo and Haggard及选项内容可定位到文章第四段。该段接着上一段谈到的“大脑对手形状感知不正确”的研究结果,继续说明其反映出“触觉敏感度的递减有着相似的梯度”状况,以及似乎能够支持的某些想法。但该段最后一句讲到。隆戈和海嘉德还不确定导致大脑对手掌比例有如此失真感知的原因,D项的still unknown与该句中的axe still not sure意思一致,故D项为答案。A项、B项和C项均是选自文中的个别词汇,但造成人们对手的形状的感知不正确的原因尚未知,故均可排除。答题时,不能被细节内容的只言片语所迷惑,而要仔细甄别,读完整段后再作整体把握。切勿一看到选项中所复现的文中原词,就急于选择,犯下以偏概全的错误。
转载请注明原文地址:https://kaotiyun.com/show/swi4777K
0
考研英语二
相关试题推荐
Excitement,fatigue,andanxietycanallbedetectedfromsomeone’sblinks,accordingtopsychologistJohnStern(21)Washington
TheUnitedStateshashistoricallyhadhigherratesofmarriagethanthoseofotherindustrializedcountries.Thecurrentannual
Thequestioningoftheroleofthepubliegalleryisnotanewphenomenon.Itissomethingthathasbeenarguedoversinceitsv
WilltheEuropeanUnionmakeit?Thequestionwouldhavesoundedstrangenotlongago.Noweventheproject’sgreatestcheerlead
OlympicGamesareheldeveryfouryearsatadifferentsite,inwhichathletes【1】differentnationscompeteagainsteachotherin
OlympicGamesareheldeveryfouryearsatadifferentsite,inwhichathletes【1】differentnationscompeteagainsteachotherin
Weaimtoensurethatallcandidatesaretreatedfairlyandthattheyhaveequal______toemploymentopportunities.
It’sanannualargument.Doweordowenotgoonholiday?Mypartnersaysnobecausetheboilercouldgo,ortherooffalloff,
[A]financialaidshouldbeprovidedtopoorcountriesthatarewithawidevarietyofplantsandanimals.[B]everyonewillsin
TheEconomistcalculatesthataroundtheworldalmost290million15-to24-year-oldsareneitherworkingnorstudying:almosta
随机试题
X2012型龙门铣床的工作进给和快速移动的调速系统是晶闸管一直流电动机无级调速传动系统。其调速范围为50:1,静差度小于15%。()
处理器的分配在逻辑上是分两级进行的,它们分别是
IFG是指
一般来说,合同的保证人不能是()。
下列各项中,应计入产品成本的是()。
下列有关图2中蛋白质的叙述,正确的是()。
“编筐编篓,家家都有”,草编曾在日常生活中随处可见。但随着传统手工艺市场逐渐被工业化挤占,加上传统手工艺传承者少、产品难以推广,草编似乎越来越不受人“待见”。然而,在滨州博兴县锦秋街道湾头村,古老的草编搭上互联网的快车后,迅速打开了市场,焕发出勃勃生机。这
我国幅员辽阔,各地各方面的差异很大,为了使教学不脱离实际而补充必要的乡土教材,贯彻的教学原则是()。
阅读下面的文言文,完成下列问题。晚游六桥待月记袁宏道西湖最盛
近几年来,一个新的群体日益受到社会的广泛关注,他们一般在20岁左右,跟随打工的父母在城市长大,受教育程度普遍不高,生存环境较差,既不是传统意义上的农村人,也不是地地道道的城市人,被称为“农民工第二代”。请你谈谈对这一社会现象的认识。
最新回复
(
0
)