An Event-Related Potential Study on the Relationship between Encoding and Stimulus Distinctiveness
An Event-Related Potential Study on the Relationship between Encoding and Stimulus Distinctiveness
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编码与刺激独特性关系的事件相关电位研究
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发表时间：
2004-07
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通讯作者：
Guo Chunyan Zhu Ying Ding Jinhong Fan Silu
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作者：
Guo Chunyan Zhu Ying Ding Jinhong Fan Silu
通过事件相关电位（ERPs）探讨了在“学习–再认”模式条件下的记忆编码与特异性效应之间的关系。为了处理初级和次级区别性，对比了深度和浅层处理的编码，以及高频和低频词的编码。主要成果是：（1）从行为学结果来看，低频词的再认准确率高于高频词;深加工的再认准确率高于浅加工;高频词在深加工中的主效应显著，而高频词在浅加工中的主效应不显著。(2)低频词的晚正成分（LPC）波幅大于高频词;对于低频词，后续识别词的ERP波幅大于未识别词。因此，编码的成功取决于间接加工和词频。
The relationship between memory encoding and stimulus distinctiveness detection was examined by means of event-related potentials (ERP) in a single-trial word list learning paradigm with recognition following distraction. To manipulate primary and secondary distinctiveness, encoding of deep vs. shallow processing was contrasted, and encoding of high vs. low frequency words was contrasted. The major results were: (1) According to behavioral results, low-frequency words had more accurate recognition than high-frequency ones; deep processing had more accurate recognition than shallow processing; and there was a significant main effect of word frequency in deep processing whereas no significant difference in shallow processing. (2) Amplitudes of late positive component (LPC) were larger for low- than for high-frequency words; for low-frequency words, ERPs were more positive for the subsequently recognized than for the unrecognized words. Therefore, encoding success was dependent on indirect processing and word frequency.