کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5124230 1378441 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The Effects of Humming on the Prephonatory Vocal Fold Motions Under High-Speed Digital Imaging in Nondysphonic Speakers
ترجمه فارسی عنوان
تأثیر هومینگ در حرکات آوازی آویزان در زیر دیجیتال با سرعت بالا در بلندگوهای ناسازگار
کلمات کلیدی
هومینگ، آواز خواندن، شروع آواز، تصویربرداری دیجیتالی با سرعت بالا، تجزیه و تحلیل حرکت
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری های گوش و جراحی پلاستیک صورت
چکیده انگلیسی

SummaryObjectivesThis study aimed to investigate whether humming affects the adductive motion of the vocal folds and transient glottal closure in the prephonatory adjustment phase of vocal onset using high-speed digital imaging (HSDI) and a motion analysis software program.MethodsTwenty normal healthy adults without any vocal abnormalities were enrolled. While a transnasal flexible fiberscope connected to a high-speed camera was inserted, each participant was asked to perform three phonatory tasks-natural /e:/ phonation, loud /e:/ phonation, and humming /m:/ phonation-and laryngeal HSDI movies (4000 frame/s) were recorded. On each HSDI movie, the duration of the prephonatory glottal closure was measured. In addition, using motion analysis, the changes in the angle between the bilateral vocal folds during vocal fold adduction and the average angular velocity in the ranges of 100%-80%, 80%-20%, and 20%-0% from all of the angular changes were analyzed.ResultsThe angular changes showed sigmoid and polynomial-like curves during the natural/humming and loud phonation, respectively, and the 80%-20% and 20%-0% average velocities were the highest during the natural/humming and loud phonation, respectively. The humming phonation decreased all of the average regional velocities, eliminated the transient prephonatory glottal closures observed during the natural and loud phonation, and induced a greater value for the minimal angle than the natural phonation.ConclusionsThe present study demonstrates that humming encourages easy vocal initiation by decelerating the vocal fold adductive motion throughout the prephonatory adjustment phase and alleviating transient prephonatory laryngeal closure, leading to gradual and smooth vocal fold positioning.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Voice - Volume 31, Issue 3, May 2017, Pages 291-299
نویسندگان
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