Effects of manipulating the amplitude of consonant noise portion on subcortical representation of voice onset time and voicing perception in stop consonants

Shunsuke Tamura, Kazuhito Ito, Nobuyuki Hirose, Shuji Mori

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

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Purpose: The purpose of this study was to investigate whether speech perception would reflect small latency changes in subcortical speech representation. Method: Twelve native Japanese listeners participated in the experiment. Those listeners participated in speech identification task and auditory brainstem response (ABR) measurement using /d/–/t/ continuum stimuli varying in voice onset time (VOT) with manipulation of the amplitude of initial noise (consonant) portion, the duration of which corresponded to VOT. Results: Increasing the noise portion amplitude lengthened subcortical representation of VOT, which is the latency difference between ABRs synchronizing to the onsets of initial noise and following periodic (vowel) portions (VOT ABR ) and made listeners likely to perceive the stimuli with ambiguous VOT as a voiceless stop /t/. In addition, the amount of VOT ABR lengthening was close to that of the VOT boundary shortening. Conclusion: A few milliseconds of difference in subcortical speech representation are important for the perception of speech sounds with ambiguous acoustic cues.

元の言語英語
ページ(範囲)434-441
ページ数8
ジャーナルJournal of Speech, Language, and Hearing Research
62
発行部数2
DOI
出版物ステータス出版済み - 2 2019

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All Science Journal Classification (ASJC) codes

  • Language and Linguistics
  • Linguistics and Language
  • Speech and Hearing

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