2015 Fiscal Year Final Research Report
Evaluation of Speaking Ability with Oral Diadochokinesis: Acoustic-Physiologic Observations of Speech Movements at Controlled Rate
| Project/Area Number |
26560290
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Kyoto Gakuen University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 発声発語障害 / 音響分析 / 生理計測 / dysarthria / テンポ指定 / 言語性交互変換運動 / 発語能力評価 / 側音化構音 |
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| Outline of Final Research Achievements |
Oral diadochokinesis was performed at controlled rates (1Hz, 2Hz, and 3Hz) and maximum rate to examine the segmentation of speech signal and the adequacy of speech movements. Unlike normal speakers, speech segmentation was incomplete at 2Hz or 3Hz for dysarthric speakers, implying disrupted speech movements. Lip-jaw movements seemed to be regulated by speaking rate and vocal level in relation to target vowels. Vocal tract constriction was narrow and deviated for lateralized /ki/ productions based on the 4D-CT observation. Slurred speech and/or defective articulation of patients with speech disorders may be caused by articulatory undershoot at fist rates or abnormal oral constriction.
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| Free Research Field |
リハビリテーション科学
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