Amplitude of N400 component unaffected by lexical priming for moderately constraining sentences

Amplitude of N400 component unaffected by lexical priming for moderately constraining sentences
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对于适度约束的句子,N400 分量的幅度不受词汇启动的影响

DOI:
10.1109/cip.2014.6844516
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发表时间:
2014
期刊:
2014 4th International Workshop on Cognitive Information Processing (CIP)
影响因子:
--
通讯作者:
Paul D. Elbourne
Paul D. Elbourne
中科院分区:
--
文献类型:
--
作者:
Paul D. Elbourne

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N400是一种事件相关电位(ERP),反映了大脑中语义的处理。在阅读句子时,N400的幅值受句子的完形填空概率和单个词之间的联想强度的调节。当在强约束句中出现矛盾时,也就是说,句首建立了对最后一个词的强烈期望,完形填空概率推翻了联想强度的影响。我们的证据表明,这也是非约束句的情况下,如低到中等完形填空概率。我们的研究结果表明,如果句子产生的最后一个词,即使是弱到中等的期望,词联想几乎没有发挥作用,在这个词的处理。
The N400 is an event-related potential (ERP) that reflects the processing of semantics in the brain. When reading sentences, the N400 amplitude is modulated by both the cloze probability of the sentence and the association strength between individual words. When contradicted in strongly constraining sentences, that is, the beginning of the sentence builds a strong expectation of the final word; the cloze probability overrules the effect of association strength. We evidence that this is also the case for non-constraining sentences, such as the ones with low to moderate cloze probabilities. Our results give the evidences that if the sentence generates even weak to moderate expectations about the final word, word association plays almost no role in the processing of this word.
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