Multivariate Analysis of Vocal Fold Vibrations in Normal Speakers Using High-Speed Digital Imaging.

Autor: Yamauchi A; Department of Otolaryngology, The University of Tokyo Hospital, Bunkyo-Ku, Tokyo, Japan. Electronic address: drachilles23@yahoo.co.jp., Imagawa H; Department of Otolaryngology, The University of Tokyo Hospital, Bunkyo-Ku, Tokyo, Japan., Yokonishi H; Department of Otolaryngology, Tokyo Metropolitan Bokutoh Hospital, Sumida-Ku, Tokyo, Japan., Sakakibara KI; Department of Communication Disorders, Health Sciences University of Hokkaido, Ishikari-Gun, Hokkaido, Japan., Tayama N; Department of Otolaryngology and Tracheo-esophagology, National Center for Global Health and Medicine, Shinjuku-Ku, Tokyo, Japan.
Jazyk: angličtina
Zdroj: Journal of voice : official journal of the Voice Foundation [J Voice] 2024 Jan; Vol. 38 (1), pp. 10-17. Date of Electronic Publication: 2021 Aug 30.
DOI: 10.1016/j.jvoice.2021.08.002
Abstrakt: Introduction: Little is known about the normal variations in vocal fold vibrations. We conducted a prospective study on normal subjects using high-speed digital imaging (HSDI) to elucidate key parameters regarding age/gender-related normal variations.
Methods: Forty-six healthy adult volunteers were divided into young (aged ≤35 years) male, young female, elderly (aged ≥65 years) male, and elderly female subgroups. HSDI data of sustained phonation of /i/ at a comfortable pitch and loudness were obtained, and vibratory parameters were calculated using the visual-perceptual rating, laryngotopography, digital kymography, and glottal area waveform. Multivariate analysis was then performed on these parameters to clarify the subgroup-specific key parameters.
Results: Four key parameters were identified from a total of 83: one from visual perceptual rating and three from laryngotopography. Subgroup analyses showed that posterior-to-anterior longitudinal phase difference (PD) and high fundamental frequency (F 0 ) were specific to young female participants. A low F 0 was specific to young male participants. Large anterior-to-posterior longitudinal PD and its left-right difference were specific to elderly male participants. There were no key parameters for elderly female participants.
Conclusions: Methods that can assess F 0 and longitudinal PD, such as visual-perceptual rating and laryngotopography, were effective in the evaluation of normal vocal fold vibrations and their variations.
(Copyright © 2021 The Voice Foundation. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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