ISSN 0439-755X
CN 11-1911/B
主办：中国心理学会
　　　中国科学院心理研究所
出版：科学出版社

心理学报 ›› 2004, Vol. 36 ›› Issue (03): 253-259.

• •    下一篇

工作记忆中汉字与空间的分离及动态优势半球的ERP效应

王益文,林崇德,魏景汉,罗跃嘉,卫星   

  1. (北京师范大学发展心理研究所,北京100875) (中国科学院心理研究所心理健康重点实验室,北京100101)
  • 收稿日期:2004-04-10 修回日期:1900-01-01 出版日期:2004-05-30 发布日期:2004-05-30
  • 通讯作者: 林崇德

ERP Effects of Dynamic Maintenance of Chinese Characters and Spatial Information in Working Memory

Wang Yiwen, Lin Chongde, Wei Jinghan, Luo Yuejia, Wei Xing   

  1. (Developmental Psychology Institute, Beijing Normal University, Beijing 100875, China) (Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China)
  • Received:2004-04-10 Revised:1900-01-01 Published:2004-05-30 Online:2004-05-30
  • Contact: Lin Chongde

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摘要： 测量了14名正常被试完成延迟匹配任务时的事件相关脑电位(ERP)。在刺激消失后的延迟阶段，汉字任务和空间任务均在头皮中前部额区产生P260和晚期正成分(LPC), 在头皮后部顶枕区产生N150和晚期负成分(LNC)。汉字任务的P260表现出右脑优势， 400-800ms时LPC转变为与空间任务相比较的汉字左脑相对优势。空间任务的P260在左右脑无差异，400-800ms时LPC转变为右脑优势。头皮后部无显著差异。本研究提供了工作记忆中汉字与空间信息保持的分离及其优势脑动态变化的ERP证据。

关键词: 工作记忆, 汉字与空间信息, 优势半球, 延迟匹配任务, 事件相关电位

Abstract: Event-related brain potentials were measured when 14 normal participants were performing delay-match tasks. During the delay interval after the disappearance of Chinese characters and spatial stimulus，P260 and late positive component(LPC) were generated in centro-frontal areas, N150 and late negative component(LNC) were elicited in parieto-occipital areas. P260 of Chinese character task showed right hemispheric dominance, while from 400ms to 800ms, LPC changed to relative left hemispheric dominance of Chinese character task compared with the spatial task. P260 of the spatial task had no difference between both hemispheres, while from 400ms to 800ms, LPC changed to right hemispheric dominance. The posterior of scalp have not difference. The results provided the evidences of event-related potentials of dissociation and dynamic hemispheric dominance of maintaining Chinese characters and spatial Information in working memory.

Key words: working memory, Chinese characters and spatial information, hemispheric dominance, delay response task, event-related potentials (ERPs)

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