The Acoustic and Aerodynamic Aspects of Patients with Spasmodic Dysphonia

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J Korean Soc Laryngol Phoniatr Logop > Volume 11(1); 2000 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 2000;11(1): 98-103.

연축성 발성장애 환자의 음향학적 및 공기역학적 양상

이주환, 김인섭, 고윤우, 오종석, 배정호, 윤현철, 최성희, 최홍식

연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소

The Acoustic and Aerodynamic Aspects of Patients with Spasmodic Dysphonia

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ABSTRACT

Background and Objectives
: The etiology and pathophysiology of spasmodic dysphonia is yet unknown. This study was performed to determine if any laryngeal aerodynamic parameter distinguish the voice of patient diagnosed as having adductor spasmodic dysphonia from individuals with normal voice production and to investigate the pathophysiology of spasmodic dysphonia.
Materials and Method
s : fifteen women diagnosed as having adductor spasmodic dysphonia and fifteen normal control women participitated in this study Maximum phonation time, mean air flow rate, subglottic pressure, vocal efficiency, Vfo, NHR, VTI, FTRI, ATRI, Jitter percent, Shimmer percent were obtained from the participants using 'MDVP(multi-dimensional voice program)' of CSL(Computerized Speech lab, Kay Elemetrics, Co., Model No. 4300), and 'maximum sustained phonation' and 'IPIPI test' of AP II(Aerophone II, Kay Elemetrics, Co., Model 6800).
Results
: T-test statistical analysis revealed statistically different values for vocal efficiency, Vfo, NHR, MPT, litter percent, Shimmer percent between the spasmodic dysphonia group and the control group.
Conclusion
s : Spasmodic dysphonia affects the ability of the laryngeal mechanism to function effectively.
Results
from our study demonstrate that certain aerodynamic and acoustic parameters distinguish adductor spasmodic dysphonia from normal voice.

KEY WORDS： Spasmodic dysphonia;Aerodynamic measures;Acoustic measures;Vocal efficiency;

중심 단어： 연축성 발성장애;공기 역학적 검사;음향검사;음성효율;