Auditory neuroscience applied to stuttering

Yoshikazu Kikuchi, Toshiro Umezaki, Shizuo Komune

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

People who stutter (PWS) can reduce their stuttering rates through noise masking and altered auditory feedback; such a response can be attributed to altered auditoryinput, which suggests that abnormal speech processing in PWS results from abnormal processing of auditory input. In order to characterize such abnormalities, we examined the functional and structural changes in the auditory cortices of PWS by using a 306-channel magnetoencephalography system to assess auditory sensory gating (P50m suppression) and tonotopic organization. Additionally, we employed voxel-based morphometry to compare cortical gray matter (GM) volumes on structural MR images. PWS exhibited impaired left auditory sensory gating. The tonotopic organization in the right hemisphere of PWS was expanded compared with that of the controls. Furthermore, PWS showed a significant increase in the GM volume of the right superior temporal gyrus, consistent with the right tonotopic expansion. Accordingly, we suggest that PWS have impaired left auditory sensory gating during basic auditory input processing and that some error signals in the auditory cortex could result in abnormal speech processing. Functional and structural reorganization of the right auditory cortex appears to be a compensatory mechanism for impaired left auditory cortex function in PWS.

本文言語英語
ページ(範囲)117-121
ページ数5
ジャーナルJapan Journal of Logopedics and Phoniatrics
54
2
DOI
出版ステータス出版済み - 4 2013

All Science Journal Classification (ASJC) codes

  • LPN/LVN
  • 言語聴覚療法

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