%0 Journal Article
%T High-speed kymography identifies the immediate effects of voiced vibration in healthy vocal folds
%A Pimenta
%A Regina Aparecida
%A D¨˘jer
%A Mar¨Şa Eugenia
%A Hachiya
%A Adriana
%A Cordeiro
%A Gislaine Ferro
%J International Archives of Otorhinolaryngology
%D 2013
%I Thieme Medical Publishers
%X Introduction: The effects of voiced vibration technique can be assessed by laryngeal imaging. Kymographic images derived from high-speed videoendoscopy allow actual visualization of vocal folds vibration. Purpose: The aim of this study is to identify the immediate effects of the voiced vibration technique in healthy vocal folds using high-speed digital laryngeal imaging. Methods: Samples were obtained from 15 healthy subjects with no history of voice disorders (6 men and 9 women aged 21 to 43 years). High-speed videoendoscopy recordings were performed before and after the voiced vibration technique. Kymographic images were obtained using high-speed videoendoscopy. The vocal folds were examined in their open and closed positions and the characteristics of the opening and closing phases were determined. A customize computational routine was used quantify these parameters. The closing, opening, and speed quotients were also calculated. Results: In this study, women displayed statistically significant differences in opened phase (P= 0.05*), closed phase (P= 0.046*), and closing phase (P= 0.026*) phase characteristics. Men displayed the highest difference rate in opening time characteristics (P= 0.06). The closing and opening quotients for the female group showed significant differences (P= 0.029* and P= 0.049*, respectively). The speed quotient exhibited statistically significant differences in the male group (P= 0.048*). Conclusion: The kymographic images indicated that the immediate effect of the voiced vibration technique was smooth contact in healthy vocal fold vibration.
%K high-speed digital imaging
%K kymography
%K voiced vibration
%K voice
%U http://www.internationalarchivesent.org/additional/acervo_eng.asp?id=1336