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A study on production mechanism of pathological voice

Research Project

Project/Area Number 11671670
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionThe University of Tokyo

Principal Investigator

NIIMI Seiji  Tokyo Univ., Graduate school of medicine, Professor, 大学院・医学系研究科, 教授 (00010273)

Co-Investigator(Kenkyū-buntansha) MAKIYAMA Kiyoshi  Nihon University, Faculty of Medicine, Lecturer, 医学部, 講師 (00139172)
KUMADA Masanobu  Tokyo Univ., Graduate school of medicine, Research Asscc., 大学院・医学系研究科, 助手 (70323607)
KIRITANI Shigeru  Kobe Kaisei Women's Univ., Department of Literature, Prof., 文学部, 教授 (90010032)
加倉井 慎一  東京大学, 医学部・附属病院, 助手 (70302700)
小西 知子  東京大学, 大学院・医学系研究科, 助手 (60302668)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥2,400,000 (Direct Cost: ¥2,400,000)
KeywordsPathological voice / vocal fold vibration / High speed digital imaging method / Recurrent nerve palsy / Diplophonia / Spasmodic dysphonia / Partial laryngectomy / Voice quality / 喉頭全摘術 / 喉頭部分切除 / 嗄声 / 電気声門図 / ストロボスコピー
Research Abstract

The contribution of the vocal folds vibration pattern to voice quality has been investigated mainly on normal subjects. Because tools we have been applying to monitor the vibration is stroboscope and the stroboscope can give the idea of the vibration pattern when the vibration is regular. However, in case of pathological voice, there are no guarantee that the vibration is regular. It is rather natural to assume that the vibration is irregular. In order to understand the production mechanism, it is essential to have a special tool with high temporal resolution. We have been developing the high speed digital imaging system which allows us to monitor the vocal fold vibration with up to 9000 frame per sec. By utilizing this system, we could visualize the pathological vibration pattern seen in the vocal folds with some lesions. We investigated the production mechanism of the diplophonia which we sometime experience in laryngeal palsy cases. In diplophonia case, the vocal fold on each side v … More ibrates with different frequency. As a result, complete glottal closure is observed periodically resulting in the fluctuation of the acoustic amplitude. Since the amplitude fluctuation is quasi-periodic, we percept two different pitch. One is the fundamental frequency and the other is the modulation frequency. Another puqqling pathology is spasmodic dysphonia which is supposed to be dystonia on the vocal folds. Acoustic impression of the voice uttered by patients with spasmodic dysphonia is expressed as strained, creaky, intermittent and so forth. Those pathological voice quality is heard periodically. We monitored the vibration pattern at the moment of the abnormal voice. The vibration cycle has a long closed period and short open phase with small excursion of the vocal fold. This vibration produces the low tone and very rough impression which is similar to the acoustic impression of the vocal fry. We suppose that the pathophysiology of spasmodic dysphonia is hyperadduction of the vocal folds resulting in the tight glottal closure which suggest the therapeutic idea to weaken adduction force of the folds by injection of botulinum toxin. Less

Report

(3 results)
  • 2001 Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 宮地麻美子, 新美成二ほか: "病的振動パターンと声質の関連"日本耳鼻咽喉科学会会報. 102. 354-367 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 新美 成二: "音声障害と声帯振動"音声言語医学. 40. 242-247 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Seiji Niimi, Mamiko Miyaji: "Vocal fold vibration and voice quality"Folia Phoniatrica et Logopedica. 52. 32-38 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Akira Naito, Seiji Niimi: "The larynx during exercise"Laryngoscope. 110. 680-682 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 牧山 清, 亀谷 隆一: "嗄声"小児看護. 23. 1260-1264 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] masanobu Kumada, Seiji Niimi et al.: "The syllable method : Proportion of impaired syllable as an indicator of spsmodic dysphonia severity"Folia Phoniatrica et Logopedica. 53. 19-27 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 新美 成二: "CLIENT 21 No.15 音声障害の原因"中山書店. 37-39 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Seiji Niimi,Δ Mamiko Miyaji: "Vocal fold vibration and voice quality"Foloia Phoniatrica et logopeclica. 52-1. 32-38 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Akira Niato,Δ and Seiji Niimi: "The Larynx during exercise"Laryngoscope. 110-7. 1147-1150 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masanobu Kumada,Δ Seiji Niimi,Δ et al: "The syllable Method : Proportion of impaired syllables as an inclicator of spasmoclic dysphonia severity"Foloia Phoniatrica et logopeclica. 53-1. 19-27 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S.Niimi and M.Miyaji: "Vocal Fold Vibration and Voice Quality"Folia Phoniatrica et Logopaedia. 52. 32-38 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Tsunoda,S.Niimi: "Autologous Transplantation of Fascia Into the Vocal Fold"Laryngoscope. 110. 680-682 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Nito and S.Niimi: "The Larynx During Exercise"Laryngoscope. 110. 1147-1150 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 肥後隆三郎,新美成二 他: "嗄声の検査と原因疾患"Clinical Neuroscience 別冊. 18・6. 48-49 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 新美成二: "声帯振動と声帯病変"日気食会報. 51・2. 61-67 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 榊原健一,新美成二 他: "喉歌の発声における声帯振動の分析"日本音響学会音楽音響研究会資料. MA00-21. 33-40 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 宮地麻美子: "病的声帯振動パターンと声質との関連"日耳鼻会報. 102. 59-72 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 藤野昭典: "無声子音生成における調音器官と声門の"信学技報. 47-54 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Naito Y-H, Tayama: "Diagnosis and physiopathology of Laryngeal Deposits in Autoimmune Disease"ORL. 61. 151-157 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tsunoda K: "Hoars Voice resulting from premature ageing in Werner's syndrome"The Journal of Laryngology and Otology. 114. 61-63 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 新美成二: "音声障害と声帯振動"音声言語医学. 40. 242-247 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Niimi S: "Vocal Fold Vibration and Voice Quality"Folia Phoniatrica et Logopaedica. 52. 32-38 (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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