Effects of lexicality, frequency, and spelling-to-sound consistency on the functional anatomy of reading
Effects of lexicality, frequency, and spelling-to-sound consistency on the functional anatomy of reading
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DOI：
10.1016/s0896-6273(00)80833-8
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发表时间：
1999-09-01
期刊：
影响因子：
16.2
通讯作者：
Petersen, SE
中科院分区：
文献类型：
--
作者：
Fiez, JA;Balota, DA;Petersen, SE
功能神经成像被用来研究影响阅读表现的三个因素：首先，刺激是单词还是可发音的非单词（词汇性），第二，单词出现的频率（频率），第三，发音是否具有可预测的拼写与声音对应关系（一致性）。单词命名（阅读）和视觉固定扫描之间的比较显示，在七个区域的刺激相关的激活差异。左额叶区域表现出一致性和词汇性的影响，表明在正字法的语音转换的作用。运动皮层表现出一致性的影响双边，这表明，运动过程超出了高层次的表征词的音韵影响阅读性能。这些结果整合到理论模型的单词阅读的影响进行了讨论。
Functional neuroimaging was used to investigate three factors that affect reading performance: first, whether a stimulus is a word or pronounceable nonword (lexicality), second, how often a word is encountered (frequency), and third, whether the pronunciation has a predictable spelling-to-sound correspondence (consistency). Comparisons between word naming (reading) and visual fixation scans revealed stimulus-related activation differences in seven regions. A left frontal region showed effects of consistency and lexicality, indicating a role in orthographic to phonological transformation. Motor cortex showed an effect of consistency bilaterally, suggesting that motoric processes beyond high-level representations of word phonology influence reading performance. Implications for the integration of these results into theoretical models of word reading are discussed.