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Handedness and Semantic Processing of Auditory Words in Cerebral Hemispheres(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2007年01期
Page:
68-73
Research Field:
生命科学
Publishing date:

Info

Title:
Handedness and Semantic Processing of Auditory Words in Cerebral Hemispheres
Author(s):
Cai Houde; Xu Yan
Lab of Brain and Behavior,School of Education Science,Nanjing Normal University,Nanjing 210097,China
Keywords:
handedness;  latera lization;  integration;  sem antic processing o f aud itory wo rds;  dichotic lis tening
PACS:
B842.2
DOI:
-
Abstract:
In dichotic listen ing, left-and righ t-handers unde rtook the category classify task on concrete nouns ( an im als, objects, body parts) of Ch inese sing le cha racte rs to ex am ine the cerebra l functional la t era lization and integration fo r sem antic processing of audito ry w ords in d ifferen t handers. The results show ed that: ( 1) the erro r ra tes fo r the w ith in le ft-ear w ere low er than the w ith in r ight-earw hen respon d ing w ith the le ft-hands or the righ t-hands in the right handers, revea ling an r ight hem ispher ic dom i nance; ( 2) the righ t hem ispher ic dom inance w as also obse rved in the left-handers when respond ing w ith the le ft-hands, but therew as no sign ificant d iffe rence of the error rates between thew ith in le ft-ear and the w ith in right-ea rw hen respond ing w ith the r ight-hands, suggesting that the left-handers may be ab le to process these auditory wo rds in e ithe r the r ight or the le ft hem isphere; ( 3 ) the erro r rates for bo th the cross left-r ight ear and the cro ss r ight-left ear w ere h igher than the w ith in left-ear when respond ing w ith the left-hands in the right handers, bu t not h igher than the w ith in r ight-ear when responding w ith the right-hands, indicating no dom inance fo r interhem ispher ic integration of the sem an tic processing; ( 4) the erro r ra tes bo th for the cross left-righ t ear and the cross r ight-left ear w ere low er than the w ithin le ft-ear and the w ith in r ight-ear when responding w ith the r ight-hands in the left handers, suggesting the left -handers cou ld po ssess the ab ility to integ ra te the sem antic processing across the two hem isphe res

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Last Update: 2013-05-05