Word reading involves a series of cognitive processes, from lower-level visual processing to word semantic retrieval. To investigate the timing of the underlying neurocognitive processes in reading, the current study examined the electrophysiological correlates of cognitive functions associated with traditional Chinese word reading in Hong Kong children (Age: M = 8.19, SD = 0.82 years old) using event-related potentials (ERPs). A single-character lexical decision task and a two-character word lexical decision task were used to explore different levels of Chinese word processing. One-hundred ten children's data were analyzed. Results revealed that radical level processing was related to a P1 component at as early as 130 ms. Character-level processing was related to an N1 component from 218 ms onwards. Two-character word semantic processing was related to an N400-like component at as early as 450 ms. The results show a similar time course of visual word processing as previously reported in alphabetic languages, consistent with increasing specialization in the ventral visual stream for increasing wordlikeness leading to processing of linguistic aspects in higher-level language regions.
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