Dissociating visual form from lexical frequency using Japanese
Dissociating visual form from lexical frequency using Japanese
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DOI：
10.1016/j.bandl.2012.02.003
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发表时间：
2013-05-01
影响因子：
2.5
通讯作者：
Devlin, Joseph T.
中科院分区：
文献类型：
--
作者：
Twomey, Tae;Duncan, Keith J. Kawabata;Devlin, Joseph T.
在日语中，同一个单词可以用形态汉字或音节平假名书写，这提供了一个独特的机会，可以将单词的词汇频率与其视觉形式的频率分开——这是理解阅读区域的神经信息处理的重要区别。在行为上，参与者对高频词的反应比对低频词的反应更快，对视觉上熟悉的词的反应比不熟悉的词更快，与脚本无关。至关重要的是，成像结果表明，与词汇频率相反，视觉熟悉度对腹侧枕颞皮层的激活有很强的影响。汉字的激活程度也高于平假名单词，这并不是因为它们在视觉复杂性方面存在固有的差异。这些发现可以在预测编码框架内理解，其中 vOT 接收编码复杂视觉形式的自下而上的信息和来自编码刺激的非视觉属性的区域的自上而下的预测。 (C) 2012 Elsevier Inc. 保留所有权利。
In Japanese, the same word can be written in either morphographic Kanji or syllabographic Hiragana and this provides a unique opportunity to disentangle a word's lexical frequency from the frequency of its visual form - an important distinction for understanding the neural information processing in regions engaged by reading. Behaviorally, participants responded more quickly to high than low frequency words and to visually familiar relative to less familiar words, independent of script. Critically, the imaging results showed that visual familiarity, as opposed to lexical frequency, had a strong effect on activation in ventral occipito-temporal cortex. Activation here was also greater for Kanji than Hiragana words and this was not due to their inherent differences in visual complexity. These findings can be understood within a predictive coding framework in which vOT receives bottom-up information encoding complex visual forms and top-down predictions from regions encoding non-visual attributes of the stimulus. (C) 2012 Elsevier Inc. All rights reserved.