Affiliation:
1. University of South Carolina, Columbia
2. Charlotte Eye, Ear, Nose, and Throat Associates, Charlotte, NC
Abstract
Purpose
To ascertain the amount of phase asymmetry of the vocal fold vibration in normophonic speakers via visualization techniques and compare findings for habitual and pressed phonations.
Method
Fifty-two normophonic speakers underwent stroboscopy and high-speed videoendoscopy (HSV). The HSV images were further processed into 4 visual displays: HSV playbacks, digital kymography (DKG) playbacks, mucosal wave kymography playbacks, and static kymographic images of the medial line from the DKG playback. Two types of phase asymmetries, left-right and anterior-posterior, were rated on a scale from 1 to 5. Objective measures of left-right phase asymmetry were obtained.
Results
The majority of normophonic speakers (81%) were noted to display anterior-posterior asymmetry; however, 66% of those were characterized as mild. Seventy-nine percent of participants were noted to display left-right asymmetry; however, 72% of those were mild. A moderate relationship between the objective measures and subjective ratings was found.
Conclusions
Most normophonic speakers exhibit mild left-right and anterior-posterior asymmetries for both habitual and pressed phonations. Asymmetries were noted more often during habitual than pressed phonations, and when visualized by HSV and kymography than stroboscopy. Differences between objective measures and visual judgments support the need to quantify vocal fold vibratory features.
Publisher
American Speech Language Hearing Association
Subject
Speech and Hearing,Linguistics and Language,Developmental and Educational Psychology,Otorhinolaryngology
Reference29 articles.
1. Videostroboscopic evaluation of the larynx;Bless D. M.;Ear, Nose, & Throat Journal,1987
2. Vocal fold mucus aggregation in vocally normal speakers;Bonilha H.;Logopedics, Phoniatrics, Vocology
3. Period and glottal width irregularities in vocally normal speakers;Bonilha H.;Journal of Voice
4. Endoscope motion compensation for laryngeal high-speed videoendoscopy;Deliyski D. D.;Journal of Voice,2005
5. Clinical Implementation of Laryngeal High-Speed Videoendoscopy: Challenges and Evolution
Cited by
62 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献