Neuronal correlates of consistency and frequency effects on Chinese character naming: An event-related fMRI study

Chia Ying Lee, Jie Li Tsai, Wen Jui Kuo, Tzu Chen Yeh, Yu Te Wu, Low Tone Ho, Daisy L. Hung, Ovid J.L. Tzeng, Jen Chuen Hsieh

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

This event-related functional magnetic resonance imaging (efMRI) study aims to investigate the central representations of Chinese orthography-to-phonology transformation (OPT) by simultaneously manipulating character frequency and consistency. Bilateral inferior frontal cortices (including Broca's area and insula), the left temporoparietal region (superior parietal gyrus and supramarginal gyrus), and the left temporal-occipital junction showed greater activation, especially in low-frequency conditions, when naming inconsistent characters as compared to consistent ones. These findings suggest that these regions are involved in the sublexical conversion of orthographic input into phonological codes in naming Chinese. The similar activation pattern found in these three regions suggests a distributed process, rather than separate neural routes, for lexical and sublexical OPT. In addition, the regions involved in Chinese OPT are congruent with the findings for reading alphabetic scripts and indicate that the neuronal mechanisms for orthography-to-phonology transformation is domain universal across different writing systems.

Original languageEnglish
Pages (from-to)1235-1245
Number of pages11
JournalNeuroImage
Volume23
Issue number4
DOIs
StatePublished - Dec 2004

Keywords

  • Chinese
  • Connectionist model
  • Consistency effect
  • Dual-route model
  • Event-related fMRI
  • Frequency effect

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