Differences of relevance in implicit and explicit memory tests:An ERP study

被引：0
|
作者：
LI YueTing1
2 Key Laboratory of Mental Health
机构：
来源：
Science Bulletin | 2009年 / 15期
基金：
中国国家自然科学基金;
关键词：
implicit memory test; explicit memory test; relevance; ERP; LORETA;
D O I：
暂无
中图分类号：
Q42 [神经生理学];
学科分类号：
071006 ;
摘要：
An ERP study was conducted to explore the differences between other-relevant words and posses-sor-relevant words in implicit and explicit memory tests. The results show that other-relevant words are associated with a more negative ERP than possessor-relevant words during 300-900 ms whether in the implicit or the explicit memory tests. The N400 effect is also found in semantic processing of social materials. There is an ERP dissociation of retrieval formats between the implicit and the explicit memory tests during 700―900 ms, namely, there is no difference between other-relevant words and possessor-relevant words in the implicit memory while there is a significant difference between them in the explicit memory. Observed through Curry 6.0, the analysis of neural sources for other-relevant words and possessor-relevant words indicates that they have different locations. At 400 ms, activity is found in the left precuneus during possessor-relevant words processing. Both the right and the left precuneus are activated during other-relevant words processing. However, at 600 ms their location is both in the left precuneus. In a word, our results show that there exists a cognitive difference between other-relevant words and possessor-relevant words, and other-relevant words closely related to the percipient himself/herself are strongly responded to, which reflects that there is a bigger attention bias to the stimuli concerning the percipient himself/herself than to processor-relevant words.
引用
收藏
页码：2669 / 2680
页数：12
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