【作者】 刘荣； 郭春彦；

【Author】 Liu Rong Guo Chunyan Capital Normal University,101100,

【机构】 首都师范大学初等教育学院；

【摘要】 本实验使用事件相关电位技术,探讨了情景记忆中的不同信息在其工作记忆过程中的ERP加工特点。在工作记忆任务中,被试需要记住配对呈现的刺激(单词或图片)以及刺激之间的匹配-非匹配关系,后者将在随后的情景记忆测验中作为来源判断的项目。在情景记忆任务中,被试要进行新旧判断,并判断旧刺激在工作记忆任务中的来源背景。实验结果显示,情景记忆中来源判断正确与错误的刺激在所对应的工作记忆任务中的ERP具有不同特点。无论字词还是图片,均呈现了"记住效应",即来源判断正确的刺激相比来源错误的刺激出现更正的ERP。在500-700ms时窗上,对于单词而言,来源正确的刺激比来源错误的ERP更正,但是图片没有出现此特点。溯源分析显示,单词激活了Brodmann 10和Brodmann 31区,而图片激活了Brodmann 5。更多还原

【Abstract】 To assess the role of working memory in the formation of episodic memory,we used the event-related potential（ERPs） to monitor memory processing during a working memory task.In a working memory task,participants must memorize items-pairs （words or pictures） and match-mismatch relationship of them which the latter was considered as the source judgment in subsequent episodic memory test.Then in a subsequent episodic memory task,participants were instructed to recognize old/new items and to judge their source.The results showed that ERPs in working memory task differed as a function of whether the items and their source were later recognized in episodic memory task.Both for word and picture items,there has a memory effect which Hit_w/source evoked more positive wave than Hit_{w/o source} In 500-700 ms interval,words Hit_w/source was more positive than words Hit_{w/o source} but not a same result for pictures.The intracranial source analysis showed that the Brodmann 10 and Brodmann 31 region were active for words while Brodmann 5 was for pictures.更多还原