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1993 Fiscal Year Final Research Report Summary

Development of a new-therary for spastic dysphonia

Research Project

Project/Area Number 04671038
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Otorhinolaryngology
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KOJIMA Hisayoshi  KYOTO UNIVERSITY, Faculty of Medicine, Otolaryngology, associate Professor., 医学部, 助教授 (10127079)

Co-Investigator(Kenkyū-buntansha) OMORI Koich  Faculty of Medicine, Otolaryngology, assistant professor, 医学部, 助手 (10233272)
Project Period (FY) 1992 – 1993
KeywordsSpastic dysphonia / Resection of false vocal cord / Supra laryngeal pressure / Articulation / Plosive sound / Ficative sound
Research Abstract

The purpose of this project is to develope a new therapy for spastic dysphonia, whose definite etiology and effective treatment is not established. To examinie the relationship between the supralaryngeal pressure and vocal vibration, we investigated how the suprastructure of larynx influenced the vocal cord vibration by the extracted canine larynx. The result was that vocal vibration stopped immediately after supralaryngeal structure constricted and the pressure increased, and re-vibration was observed soon after supralaryngeal relaxation began and the pressure decreased. We suspected that this phenomenon meant constriction of supralaryngeal structure obstructed the regular vocal vibration and constriction of supralaryngeal structure compared to abduction of false vocal cord in spastic dysphonia. Based on this speculation, we thought resection of false vocal cord might improve spastic phonation. Resection of false vocal cord was applied to three patients. As the result, some improvement was obtained in two patients and spastic phonation didn't change in the other. The failed reason was that not only supralaryngeal pressure but many factors, such as articulation system and respiratory function may relate the etio]ogy of spastic dysphonia. Furthermore, we tried to elucidate the regulation mechanism of laryngeal adjustment in the running speech in normal candidate by high speed video. In voiceless plosive sound, stop of vocal vibration is regulated by the increased supralaryngeal pressure and in voiceless fricative sound, stop of vibration was controlled by intralary ngeal muscles. This result may be helpful in the study of articulatioin disorder in the near future.

  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 野々村光栄.児嶋久剛: "反田神経麻痺の動的再建法-前筋・側筋縫合術のヒトへの応用-" 耳鼻臨床. 85. 1095-1100 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 児嶋久剛,他: "老化と構音-破裂音[K]の検討-" 喉頭. 4. 105-108 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 児嶋久剛,他: "喉頭内腔への粘膜移植とフィブリン糊の有用性" 耳鼻. 39. 265-266 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Nonomura M.,Kojima H.et al.: "Anticus-lateralis muscle suturing." Arch Otolaryngol Head Neck Surg. 119. 343-346 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Nonomura M.,Kojima H.et al.: "Remobilization of paralyzed vocal cord by anticus-lateralis muscle suturing." Arch Otolaryngol Head Neck Surg. 119. 498-503 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kojima H.: "Reconstruction of the Anterior commissure with a free mucosal flap" Am.J.Otolaryngol. 14. 339-342 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kojima H: "Reconstruction of the anterior commissure with a free mucosal flap." Am J Otolaryngol. 14. 339-342 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kojima H: "Advantages of free mucosal transplantion to the larynx with a help of human fiblin glue." Otologica Fukuoka. 39. 265-266 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kojima H: "Speech characteristics of aged persons -articulation of plosive [k]-." The Larynx Japan. 4. 105-108 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nonomura M: "Remobilization of paralyzed vocal cord by anticus-lateralis muscle suturing." Arch Otolaryngol Head Neck Surg. 119. 498-503 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nonomura M: "Anticus-lateralis muscle suturing : Treatment of recurrent nerve paralysis." Arch Otolaryngol Head Neck Surg. 119. 343-346 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nonomura M: "Dynamic Reconstruction for Unilateral recurrent laryngeal nerve paralysis." Practica Otologica Kyoto. 85 : 7. 1095-1100 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kawano M: "New method of speech therapy after glossectomy." Practica Otologica Kyoto. 86 : 11. 1599-1602 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kawano M: "Laryngeal constriction related to glottal stop in cleft palate speech." Practica Otologica Kyoto. 85 : 8. 1265-1268 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kido N: "Glottal stop in cleft palate speech." Studia Phonologica. 26. 34-41 (1992)

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

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Published: 1995-03-27  

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