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 ›› 2005, Vol. 37 ›› Issue (06): 729-738.

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客体与空间工作记忆的分离：来自皮层慢电位的证据

沃建中,罗良,林崇德,吕勇   

  1. 北京师范大学发展心理研究所，北京 100875
  • 收稿日期:2005-07-12 修回日期:1900-01-01 出版日期:2005-11-30 发布日期:2005-11-30
  • 通讯作者: 林崇德

Dissociation of Object and Spatial Working Memory: Evidence from Slow Cortical Potentials

Wo-Jianzhong,-Luo-Liang,-Lin-Chongde,-Lv-Yong   

  1. Institute of Psychology, Beijing Normal University, Beijing 100875
  • Received:2005-07-12 Revised:1900-01-01 Published:2005-11-30 Online:2005-11-30
  • Contact: Lin Chongde

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摘要： 利用128导事件相关电位技术，采用延迟匹配任务的实验范式，测查了16名正常被试在完成客体任务和空间任务时的皮层慢电位（slow cortical potentials，简称sp成分），实验发现：在后部脑区，客体工作记忆与空间工作记忆在慢波活动的时间上存在分离，空间任务更早的诱发出负sp成分，并且空间任务激活更多的后部脑区；左下前额叶在客体工作记忆任务与空间工作记忆任务中都有激活，并且激活强度不存在显著差异；背侧前额叶主要负责客体信息的保持与复述，但左右背侧前额叶的激活强度存在不对称性。

关键词: 客体工作记忆, 空间工作记忆, 皮层慢电位（sp成分）, 分离

Abstract: This study used delayed matching task. Slow cortical potentials were measured when 16 normal participants were performing object and spatial working memory task. The results were as follows: at global posterior brain regions, dissociation in time of slow cortical potentials between object and spatial working memory task was found, and excessive posterior brain regions were activated in spatial working memory task. Left inferoprefrontal cortex（LIPFC） was activated in object and spatial working memory task, and there was not significant difference in intensity of activation. The dorsolateral prefrontal cortex（LDPFC） was responsible for maintenance and rehearsal of object information，but there was not symmetrical in intensity of activation between left and right dorsolateral prefrontal cortex.

Key words: object working memory, spatial working memory, slow cortical potentials, dissociation

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