Impaired Orthographic Processing in Chinese Dyslexic Children: Evidence From the Lexicality Effect on N400

Yu Lin Tzeng, Chun Hsien Hsu, Wan Hsuan Lin, Chia Ying Lee

研究成果: 雜誌貢獻期刊論文同行評審

19 引文 斯高帕斯(Scopus)

摘要

This study used the lexicality effects on N400 to investigate orthographic processing in children with developmental dyslexia. Participants performed a Go/No-Go semantic judgment task; three types of stimuli—real characters (RC), pseudocharacters (PC), and noncharacters (NC)—were embedded in No-Go trials. Two types of lexicality effects (RC vs. NC and PC vs. NC) were used to reflect the sensitivity to Chinese orthographic knowledge. In typical developing children, NC elicited a more negative N400 in frontal sites and a less negative N400 in bilateral posterior sites than RC and PC. The reversed lexicality effects in anterior and posterior sites support the dual-mechanism for lexical retrieval. Children with dyslexia revealed a more negative N400 for NC in frontal sites compared with RC, suggesting that they remained sensitive to orthographic familiarity. However, no difference between NC and PC was observed, suggesting a weakness in capturing Chinese orthographic knowledge in children with dyslexia.

原文???core.languages.en_GB???
頁(從 - 到)85-100
頁數16
期刊Scientific Studies of Reading
22
發行號1
DOIs
出版狀態已出版 - 2 1月 2018

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