ISSN 0439-755X
CN 11-1911/B

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

    Next Articles

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

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)

CLC Number: