Pattern Analysis of Voice Onset and Offset in Normal Adults Using High-Speed Digital Imaging: The Role of Arytenoid Cartilage Movements

서지정보

· 발행기관 : 한국언어청각임상학회
· 수록지 정보 : Communication Sciences and Disorders / 20권 / 4호 / 607 ~ 616페이지
· 저자명 : 최성희, 오치선, 최철희

초록

Objectives: Voice onset and offset include dynamic changes of aerodynamic and biomechanical properties showing irregular and chaotic voice signals during phonation. This preliminary study investigated voice onset and offset patterns based on gender using high-speed digital imaging. Methods: Pattern analysis was performed with 40 adults. A total of 80 images (40 voice onset, 40 voice offset) were analyzed by two speech-language pathologists specialized in voice. Results: The most predominant pattern of voice onset was Type I (nearly simultaneous initiation of vocal folds vibration with the contact of arytenoid cartilages) in all male and female groups, followed by Type II (delayed initiation of vocal folds vibration after contact of arytenoid cartilages) in both groups. Type III voice onset, characterized by the initiation of vocal folds vibration before contact of arytenoid cartilages was only identified in one normal female. On the other hand, Type I, II, and III voice offset patterns were represented in all gender groups. Type I (simultaneously complete cessation of vocal folds vibration with abduction of arytenoid cartilages) was most frequently detected, followed by Type III (abduction of arytenoid cartilages before the cessation of vocal folds vibration), followed by Type II (delayed abduction of arytenoids after complete cessation of vocal folds vibration). However, there was no significant difference between the two gender groups in voice onset and offset patterns (p>.05). Conclusion: Accordingly, the present study may be useful to provide preliminary normative data regarding voice initiation and cessation in Korean young adults.

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