Syllabic encoding during overt speech production in Cantonese: Evidence from temporal brain responses

Andus Wing Kuen WONG, Jie WANG, Tin Yan NG, Hsuan Chih CHEN*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

14 Citations (Scopus)

Abstract

The time course of phonological encoding in overt Cantonese disyllabic word production was investigated using a picture-word interference task with concurrent recording of the event-related brain potentials (ERPs). Participants were asked to name aloud individually presented pictures and ignore a distracting Chinese character. Participants' naming responses were faster, relative to an unrelated control, when the distractor overlapped with the target's word-initial or word-final syllables. Furthermore, ERP waves in the syllable-related conditions were more positive-going than those in the unrelated control conditions from 500 ms to 650 ms post target onset (i.e., a late positivity). The mean and peak amplitudes of this late positivity correlated with the size of phonological facilitation. More importantly, the onset of the late positivity associated with word-initial syllable priming was 44 ms earlier than that associated with word-final syllable priming, suggesting that phonological encoding in overt speech runs incrementally and the encoding duration for one syllable unit is approximately 44 ms. Although the size of effective phonological units might vary across languages, as suggested by previous speech production studies, the present data indicate that the incremental nature of phonological encoding is a universal mechanism.

Original languageEnglish
Pages (from-to)101-109
Number of pages9
JournalBrain Research
Volume1648
Issue numberA
DOIs
Publication statusPublished - Oct 2016
Externally publishedYes

Bibliographical note

This work was supported by two research Grants from the Research Grants Council, University Grants Committee of the Hong Kong Special Administrative Region, China (CityU 21402514 and CUHK441811 ), and a Direct Grant for Research from the Chinese University of Hong Kong .

Keywords

  • Cantonese speech production
  • Event-related brain potentials (ERP)
  • Phonological encoding

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