Early event-related potential effects of syllabic processing during visual word recognition
Early event-related potential effects of syllabic processing during visual word recognition
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DOI：
10.1162/089892905774589217
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发表时间：
2005-11-01
影响因子：
3.2
通讯作者：
Barber, H
中科院分区：
文献类型：
--
作者：
Carreiras, M;Vergara, M;Barber, H
许多行为研究表明，音节可能在某些语言的视觉单词识别中发挥重要作用。我们报告了两个使用新范式的事件相关电位 (ERP) 实验，表明音节单位调节早期 ERP 组件。在实验1中，单词和伪单词以视觉方式和颜色呈现，使得音节边界和颜色边界之间存在匹配或不匹配。结果显示 P200 时间窗口内的颜色音节一致性效应。词汇性调节了 N400 幅度，但在 P200 窗口中没有获得该变量的影响。在实验2中，高频词和低频词以及伪词在一致和不一致的条件下呈现。结果再次显示了低频词和伪词在 P200 上的一致性效应，但高频词则不然。词汇度和词汇频率效应出现在 N400 组件上。结果表明音节效应和词汇效应之间的分离对视觉单词识别模型产生了重要影响。
A number of behavioral studies have suggested that syllables might play an important role in visual word recognition in some languages. We report two event-related potential (ERP) experiments using a new paradigm showing that syllabic units modulate early ERP components. In Experiment 1, words and pseudowords were presented visually and colored so that there was a match or a mismatch between the syllable boundaries and the color boundaries. The results showed color-syllable congruency effects in the time window of the P200. Lexicality modulated the N400 amplitude, but no effects of this variable were obtained at the P200 window. In Experiment 2, high- and low-frequency words and pseudowords were presented in the congruent and incongruent conditions. The results again showed congruency effects at the P200 for low-frequency words and pseudowords, but not for high- frequency words. Lexicality and lexical frequency effects showed up at the N400 component. The results suggest a dissociation between syllabic and lexical effects with important consequences for models of visual word recognition.