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
Some people have a more complicated sensory life than others. Most taste tuna only when they eat it. A few, though, taste it whe
Some people have a more complicated sensory life than others. Most taste tuna only when they eat it. A few, though, taste it whe
admin
2016-10-21
9
问题
Some people have a more complicated sensory life than others. Most taste tuna only when they eat it. A few, though, taste it when they hear a particular word, such as "castanet". Others link the color red with the letter " S" or make some other inappropriate connection between stimulus and response. Such people are known as synaesthetes, and the phenomenon of synaesthesia has puzzled brain scientists since it Was recognized over a century ago.
Most researchers in the field suspect synaesthesia is caused by crossed wires in synaesthetes’ brains, but until recently they have had no way to check this hypothesis. However, the development of a technique called diffusion-tensor imaging has changed that. And researchers at the University of Amsterdam have just applied it to the brains of 18 women(the sex more likely to experience synaesthesia)who have the most common form of the condition. This is called grapheme-color synaesthesia. It is a tendency to see letters and numbers in color.
Diffusion-tensor imaging measures the direction of movement of water molecules. Since the filaments that connect distant nerve cells are surrounded by fatty sheaths which restrict the movement of water, such molecules tend to move along a filament rather than out of it. The upshot is that the technique can detect bundles of such filaments running from one part of the brain to another.
The grapheme-color synaesthesia was chosen to study for two reasons. One was that it is common. The other was because there is a specific hypothesis as to its cause. Earlier brain-scanning studies have shown that the part of the brain which identifies word shape is in an area called the fusiform gyrus. This is next to an area known as V4, which identifies color. Both light up simultaneously in traditional scanners when someone is experiencing grapheme-color synaesthesia, so an inappropriate link between them is an obvious thing to look for.
Diffusion-tensor imaging did, indeed, show strong connections between these two areas in the brains of the synaesthetes when they slid into the scanner and viewed color-evoking letters and numbers. Other unusual connections showed up too, suggesting the phenomenon is more complex than had been appreciated. By contrast, the brains of 18 non-synaesthetes matched with the volunteers by age and sex showed no such strong connections.
And the revelations went further. Certain types of grapheme-color synaesthetes have more connectivity than others. As part of the study, researchers asked volunteers to fill out questionnaires about how they experience their color sensations. Some reported seeing color projected on to whatever word or number they were shown. Members of this group are known as "projectors". Others, known as "associators" , reported color only in their mind’s eye. Although both groups of synaesthetes had much more connectivity than non-synaesthetes, projectors had noticeably more again than associators.
Researchers are not yet sure what form the stronger connections take. They could be the result of more filaments than normal connecting the areas in question. Or the filaments might be broader than normal. Or the fatty coatings of the filaments might be thicker, which would amplify the signal passing along them as well as keeping water molecules on the straight-and-narrow.
How synaesthesia starts is also unclear. There is evidence of a genetic component but learning must be involved as well. People are not born with the concept of the letter " A". And they certainly are not born with a bright-red, cherry-colored "A" — however much it feels, as synaesthetes insist, as though they were.
The example at the end of the passage seems to suggest______.
选项
A、synaesthesia is partly subject to genetic influence
B、people don’t have the concept of the letter "A" when they are born
C、people’s concomitant sensation is usually swayed by learning
D、the connection between the color red and the letter "A" is strong
答案
C
解析
推断题。原文说明人们并不是与生俱来就认识A这个字母,同样也不是与生俱来就将A与红色产生联觉效应,所以最末一个例子在于强调后天的学习对联觉效应的影响,故选C。A和B片面,D与原文不符。
转载请注明原文地址:https://jikaoti.com/ti/EdFYFFFM
0
专业英语八级
相关试题推荐
Somedeviantusesoftechnologyarecriminal,thoughnotallparticipantsseeitthatway.Downloadingofmusic,typicallyprot
Somedeviantusesoftechnologyarecriminal,thoughnotallparticipantsseeitthatway.Downloadingofmusic,typicallyprot
Somedeviantusesoftechnologyarecriminal,thoughnotallparticipantsseeitthatway.Downloadingofmusic,typicallyprot
Oneofthemanyquestionsbroughtupisinregardswithwhetherornotcloningshouldbeanoptionfor【M1】______parentsthata
ToaWaterfowlwaswrittenby______,whowastheleadingpoetoftheRomanticPeriodofAmericanliterature.
"Iboughtsomeroses"______"Iboughtsomeflowers".
Humansareforeverforgettingthattheycan’tcontrolnature.Exactlytwentyyearsago,theTimemagazinecoverstoryannounced【
ThePurposeofLiteraryAnalysisI.Introduction—makingreadersappreciate【B1】______ofliteraryworks【B1】______—relatinglit
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrommanufacturingtoservice-basedorganizations,incr
A、Itissatisfying.B、Itisnotessential.C、Itistoomuch.D、Itisbarelyenough.D本题考查重要细节。根据句(7-1)、句(7—2)和句(7—3)可知,人们每天要摄取75
随机试题
公信原则的目的是使社会公众相信物权的效力。()
有关巩膜的描述,正确的是
压杆下端固定,上端与水平弹簧相连,如图5-119所示,则压杆长度因数μ的范围为()。
下列关于照明灯具的设置要求的说法中,错误的是()。
原假设H0:某生产过程的不合格品率不大于p0,则第二类错误指的是()。
根据我国《教师法》的规定,下列选项中不属于教师在教学过程中应当履行的义务的是()。
研究“基本”粒子,须借助极高的能量。欲知物质的微观结构.首先得变革微观物质,即得想办法把氢原子、原子核以及质子、中子等这些小粒子打碎,使它们的内部结构和各种性质暴露出来。对“物质的微观结构”与“微观物质”解说正确的一项是()。
属于公安机关紧急状态处置权的是()。
下列哪个选项中的图形能够折叠成完整封闭的立体几何结构?
“知之者不如好之者,好之者不如乐之者”,这一论述强调的学习动机类型是
最新回复
(
0
)