短时存贮与复述动态分离的ERP证据
ERP EVIDENCES OF DYNAMIC DISSOCIATION OF SHORT-TERM STORAGE AND REHEARSAL
查看参考文献21篇
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文摘
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工作记忆参与信息的短时贮存和操作加工.为了分离参与词语短时存贮与复述的脑区及其时间过程,测量并比较了14名正常青年被试进行汉字2-back、0-back和复述任务时的事件相关电位(ERPs).结果发现,2-back任务减复述任务在头皮后部出现差异波N430,可能反映了信息的短时存贮及其时间进程.2-back任务减0-back任务在头皮前部所得的持续负成分SNC可能是复述加工的动态指标.SNC和N430持续时间的重叠提示,大脑额叶和后部区域分别参与信息的复述和短时存贮,两者的动态分离加工可能是工作记忆中暂时保持的神经基础. |
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其他语种文摘
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Working memory (WM) is a system that is used for temporary storage and manipulation of information. For dissociate the brain areas involved in verbal storage and rehearsal, event-related brain potentials were measured when 14 normal young participants were performing 2-back task, 0-back task and rehearsal task of Chinese charac-ters. The difference wave N430 appeared at the posterior of the scalp by subtraction of ERP in the rehearsal task from that in 2-back task, which probably reflected the short-term storage and its time-course. The difference wave of sustained negative component (SNC) appeared at the anterior of the scalp by subtraction of ERP in 0-back task from that in 2-back task, which is a likely dynamic index of rehearsal processes. Frontal lobe and posterior areas of brain maybe govern the rehearsal and short-term storage, respectively. The dynamic division of both areas possibly is neural base of temporarily maintaining in verbal WM. |
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来源
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心理学报
,2004,36(6):697-705 【核心库】
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关键词
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工作记忆
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短时存贮
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复述
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N-back任务
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事件相关电位
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地址
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1.
北京师范大学发展心理研究所, 北京, 100875
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中国科学院心理研究所, 心理健康重点实验室, 北京, 100101
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语种
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中文 |
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ISSN
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0439-755X |
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学科
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社会科学总论 |
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基金
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国家教育部人文社会科学重点研究基地基金
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文献收藏号
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CSCD:1658326
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