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1998 Fiscal Year Final Research Report Summary

Basic and clinical research on speech perception and production

Research Project

Project/Area Number 09557135
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Otorhinolaryngology
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

HONJO Iwao  Kyoto University, Hearing and Speech Science, Professor, 医学研究科, 教授 (00077653)

Co-Investigator(Kenkyū-buntansha) SHOJI Kazuhiko  Kyoto University, Hearing and Speech Science, Assistant Professor, 医学研究科, 講師 (60196582)
NAITO Yasushi  Kyoto University, Hearing and Speech Science, Assistant Professor, 医学研究科, 講師 (70217628)
TAKAHASHI Haruo  Kyoto University, Hearing and Speech Science, Assistant Professor, 医学研究科, 講師 (90171511)
KOJIMA Hisayoshi  Kyoto University, Hearing and Speech Science, Associate Professor, 医学研究科, 助教授 (10127079)
Project Period (FY) 1997 – 1998
KeywordsSpeech perception / Vocalization / Functional brain imaging / PET / Cochlear implant / Auditory feedback
Research Abstract

We examined central processing mechanism for speech perception and production using functional brain image such as positron emission tomography (PET) in subjects of hearing impairment and speech disorder as well as normal subjects. Postlingu ally deafened subjects indicated rather identical activation of auditory association areas with normal subjects. But, more activation was observed in cingulate gyms and supplementary motor area in deaf subjects. The brain imaging of prelingually deafened subjects showed quite different pattern. Most cases showed little activation in the auditory association areas by listening to speech sounds via cochlear implant. On the other hand, the auditory association areas were activated by lipreading in some prelingually deafened subjects. These results imply that the brain differentiation should differ according to verbal environment during speech acquisition period.
As for vocalization, Broca* area, motor area, supplementary motor area, the cerebellum were important for output of speech. However, the auditory association areas were not activated during vocalization, which indicated that auditory feedback system was not needed to perform daily conversational vocalization. In contrast, when one* speech was distorted, the auditory association areas became to be activated, which implied the feedback system to repair vocalization. This situation is similar to that during speech acquisition period.
In conclusion, we can observe various patterns of cortical processing mechanisms according to the situation of verbal environment.

  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 本庄 巖: "難聴者の脳機能" 耳鼻咽喉科臨床. 92. 211-217 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hisayoshi Kojima et al: "Left hemispheric dominance and the role of verbal motor-related region in language cognition" Clinical Positron Imaging. 1. 223-228 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hisayoshi Kojima et al.: "The role of the temporal coding system in the auditory cortex on speech recognition" NeuroReport. 8. 2395-2398 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasushi Naito et al: "Sound-induced activation of auditory cortices in cochlear implant users with post-and prelingual deafness demonstrated by positron emission tomography" Acta Otolaryngol(Stockh). 117. 490-496 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasushi Naitou et al: "Central auditory processing of speech in cochlear implant users demonstrated by positron emission tomography" Adv Otorhinolaryngol. 52. 19-23 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasushi Naito et al: "Brain plasticity observed in deaf subjects : PET study in cochlear implant users and normal subjects" Proceedings of XVI World Congress of Otolaryngol Head Neck Surgery. 937-941 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Iwao Honjo: "Language viewed from the brain" Karger, 157 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 本庄 巖: "脳からみた言語" 中山書店, 250 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hisayoshi Kojima et al.: "Left hemispheric dominance and the role of verbal motor-related region in language cognition" Clin Positron Imag. 1. 223-228 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hisayoshi Kojima, et al.: "The role of the temporal coding system in the auditory cortex on speech recognition." Neuro Report. 8. 2395-2398 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yaushi Naito, et al.: "Sound-induced activation of auditory cortices in cochlear implant users with post- and prelingual deafness demonstrated by positron emission tomography." Acta Otolaryngol(Stockh). 117. 490-496 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasushi Naito, et al.: "Central auditory processing of speech in cochlear implant users demonstrated by positron emission tomography." Adv Otorhinolaryngol. 52. 19-23 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasushi Naito, et al.: "PET study in cochlear implant users and normal subjects." Proceedings of XVI World Congress of Otolaryngology Head Neck Surg. 937-941 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iwao Honjo: Language viewed from the brain. Karger, 157 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iwao Honjo: Language viewed from the brain. Nakayama, 250 (1997)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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