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说汉语者使用大脑更多部分
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9 b4 X: c: \# z+ K) v- _说汉语普通话者讲话时同时使用大脑两边
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英国的研究人员发现,说汉语普通话的人可能比说英语的人用更多大脑。研究表明,说汉语普通话者讲话时同时使用大脑两边。 % p9 O# l& a" H- |1 v7 z* `: B% M
说英语者只使用大脑一边。研究人员说,这项研究能够促进了解大脑处理语言的过程。
7 ?* N" S2 v- }. c$ b6 K1 \. G另外,这项研究还可以帮助研究人员找到更好的办法,帮助人们在中风或者脑部受到类似损害后重新学习,掌握语言技能。
2 g- Z- _: O+ P/ M/ j, e! k0 T在这项研究中,操汉语普通话和操英语的两组人接受脑部扫描。研究人员发现,人们讲英语时,靠近左太阳穴的左颞叶开始活跃。
9 O: i2 _8 m" ?) n* @0 r他们发现,大脑这个区域的功能是把发音联系起来,形成单个词汇。 " A# I# L. e: ^2 A) J7 a, E. i
研究发现,人们说汉语时,左颞叶和右颞叶一起活跃。研究人员说,说不同语言时,人的大脑在以不同方式破译语言。这就推翻了长期以来的看法。 . Y# {4 _5 ]: p; Z# P* m
汉语普通话十分难学。不同于操英语者,说汉语者使用音调区分不同词的不同意思。比如"马"音,用不同音调发音,可以是马,妈等不同的意思。
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Chinese 'takes more brainpower' 3 \4 U& u g# ?) h
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Speaking Chinese may take more brainpower than speaking English, a study suggests. y. C+ |" [' [7 B0 ]
Researchers in Britain have found that people who speak Mandarin Chinese use both sides of their brain to understand the language.
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This compares to English-language speakers who only need to use one side of their brain.
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The researchers said the findings could boost understanding of how the brain processes languages.
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9 I' \" a- J$ M" qThis, in turn, could one day help scientists to develop better ways of helping people to re-learn languages after a stroke or similar damage to the brain. $ T, H6 D# R8 u) |: D
# u1 G2 o; m& I1 b& DBrain scans A2 T: q1 y! z z
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Dr Sophie Scott and colleagues at the Wellcome Trust carried out brain scans on a group of Mandarin and English speakers.
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They found that the left temporal lobe, which is located by the left temple, becomes active when English speakers hear English. t' r; _1 ~* q7 P; c) e. f2 h/ \
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The researchers believe that this area of the brain links speech sounds together to form individual words.
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They expected similar findings when they carried out scans on Mandarin speakers. " O+ d' u H- P8 {
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However, they found that both their left and right temporal lobes become active when they hear Mandarin.
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0 j1 v1 r/ I2 E5 s4 r"People who speak different sorts of languages use their brains to decode speech in different ways," said Dr Scott. 9 H! L- B- N* j" P; K' f3 f# ?
( f+ d7 ]- k0 T7 X3 l; \/ p% b"It overturned some long-held theories." / }" n! S. J1 h, ] t5 n
9 x z2 R/ p2 t2 }* m5 E7 |7 RMandarin is a notoriously difficult language to learn. Unlike English, speakers use intonation to distinguish between completely different meanings of particular words. " g2 Y9 u- U* b
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For instance, the word "ma" can mean mother, scold, horse or hemp depending on how it is said. * o/ Z6 D$ w* L, O# d9 K% ^0 a
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The researchers believe that this need to interpret intonation is why Mandarin speakers need to use both sides of their brain.
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! j' @1 U- K* rThe right temporal lobe is normally associated with being able to process music or tones.
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"We think that Mandarin speakers interpret intonation and melody in the right temporal lobe to give the correct meaning to the spoken words," said Dr Scott. ! |* o. }; Z2 e$ s2 h
, l( g. V8 g; B6 c( \"It seems that the structure of the language you learn as a child affects how the structure of your brain develops to decode speech. ) q. D7 q# r; e% { s" B
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"Native English speakers, for example, find it extraordinarily difficult to learn Mandarin." , X1 Y7 @6 f- Z; i5 ]. Y% Y6 g
* O" h2 `% T2 I, r: I6 o5 K6 ALearning languages
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Dr Scott said the findings could help scientists to understand how the brain learns language.
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It could be particularly useful in trying to understand how it re-learns language after a stroke. 7 w# {: q1 f9 Y
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She suggested it could also lead to new drugs to help people who have lost their language skills. / u; E% x' M% x3 l
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"There is evidence from other studies that certain drugs affect learning in the brain regions that support hearing and speech," she said. ) T) T1 p1 Y. T# {0 G. E4 T9 P, v$ T
: g; e! @) m! E1 X1 I7 Z& {"This is something we can improve on." v7 L9 x, S; H
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Dr William Marslen-Wilson, of the MRC Cognition and Brain Sciences Unit at Cambridge University, welcomed the study. q+ b1 R' F3 h( V* u* l
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"It is an interesting finding," he told BBC News Online.
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& h- }& |3 v: h"Looking at languages that are very different from each other helps us to understand how the brain processes language.
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"It can also help us to understand language rehabilitation," he said.
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"This field is really opening up but it is very early days." 3 j f! X& w" A4 f% M
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The findings will be included in the summer science exhibition at the Royal Society in London, which runs from 1 to 3 July.
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Story from BBC NEWS:: ?: z0 F! u( g
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[ Last edited by victorw on 2005-2-24 at 06:22 PM ] |
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