1997 Fiscal Year Final Research Report Summary
Pathophysiological Study on Phonatory Function after Phonosurgery
| Project/Area Number |
08457449
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Otorhinolaryngology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
NIIMI Seiji Univ.of Tokyo, Grad.School Med., Professor, 大学院・医学系研究科, 教授 (00010273)
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| Co-Investigator(Kenkyū-buntansha) |
KIMADA Masanobu Haskins Lab., Researcher, 生理学第一講座, 助手
TAYAMA Nirou Univ.of Tokyo, Med.Hospital, Lecturer, 医学部・附属病院, 講師 (50221403)
MORI Koichi Univ.of Tokyo, Grad.School Med., Research Associate, 大学院・医学系研究科, 助手 (60157857)
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| Project Period (FY) |
1996 – 1997
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| Keywords | High speed digital imaging system / Partial laryngectomy / Vocal fold vibration / Spasmodic dysphonia / Dysphagia / Dysphonia in children |
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| Research Abstract |
In this project, the high speed digital imaging system has been developed and can be used to evaluate the vocal folds function of the patient. The sound source of the partial laryngectomized patient was investigated to find that the ary-epiglottic fold can vibrate to generate the voice. This finding gives us a new idea to improve the voice quality to the post operative patient.
By using the high speed digital imaging system, some causative factors of the voice disorders have been clarified. Especially, the mode of the onset of the phonation has an effect not only at the beginning of the phonation but at the following stationary phonation. It means that the voice attack should be one of the most important factor for the vocal hyginene. This also provides the new knowledge to make a clinical program of the rehabilitation after phonosurgery.
Recently, the number of the patients with functional dysphonia tends to be increasing especially, among the professional voice users. Spasmodic dysphonia is one of the functional dysphonia which is difficult to treat. We have been using the botulinum toxin. Vocal fold vibration, psychoacoustic impression and acoustic parameters were evaluated pre and post treatment. The neurological back ground as an etiologic factor was strongly suggested.
Swallowing function after phonosurgery was also evaluated. It becomes clear that the phonatory function and the swallowing function improves together.
Voice and speech disorders in the children are important from educational point of view as well as medical point of view. We have started a pilot study to find out the evaluation system for the voice and speech disorders in children.
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