2006 Fiscal Year Final Research Report Summary
Application of cine MRI for the development of computerized evaluation system for articulation disorders
| Project/Area Number |
17592106
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Surgical dentistry
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| Research Institution | Showa University |
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Principal Investigator |
SUZUKI Noriko Showa University, School of Dentistry, Associate Prof., 歯学部, 助教授 (10112731)
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| Co-Investigator(Kenkyū-buntansha) |
SAITO Hiroto Showa University, School of Dentistry, Assistant Prof., 歯学部, 講師 (20343501)
FUJITA Yukihiro Showa University, School of Dentistry, Assistant Prof., 歯学部, 講師 (30459218)
AKAGI Masato JAIST, Information Science, Professor, 情報科学, 教授 (20242571)
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| Project Period (FY) |
2005 – 2006
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| Keywords | Cine MRI / Acoustical analysis / Articulation disorders / Speech recognition / FEM / Tongue model |
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| Research Abstract |
Speech disorders caused by oral and maxillofacial lesions are diagnosed by clinicians based on subjective evaluation using auditive impression. The purpose of this research is developing the computerized diagnosis system for the subjective evaluation of articulation disorders.
From 2005 to 2006 the results of MR and Acoustic results in velopharyngeal incompetence patients and glossectomee and normal children were obtained.
To clarify the relationship between the perceptual diagnoses of hypernasality and its physical correlates experiments were conducted using Japanese vowel /i/. As results the decrease in the magnitude of F2 and the dip between F2 and F3 are related to excessive acoustic coupling of the nasal cavity (Kozaki 2005). The acoustic characteristics of children of the Japanese consonants [s][sh], especially focused on the stage of missing deciduous incisors were clarified (Sugiyama 2006). The vocal tract shapes are measured and the VTTF of vocal tract model are estimated, in order to investigate effects of vocal tract shapes on the spectrum of speech sound. As a result vocal tract shapes having oral lesions are different from normal one (Nishimoto 2006). Finally we tried the estimation of movements after Glossectomy based on 3D physiological tongue model and the simulations proved that developed model can be a useful tool for the study of speech disorders with pathology of the tongue (Fujita 2007)
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Research Products
(11 results)
