Mucosal Wave Asymmetries in the Clinical Voice Laboratory

Evaluation of Vocal Fold Vibration With an Assessment Form for High-Speed Digital Imaging: Comparative Study between Healthy Young and Elderly Subjects

“…[25][26][27][28][29][30] It is counterintuitive that atrophic change was more frequent and severer in elderly females than elderly males in the present study because past studies reported the incidence of atrophic change to be 36% in elderly females and 68% in elderly males. 25 The discrepancy might come from the difference in evaluating modality: HSDI films used in the present study contained only the adducted status during phonation with black-and-white images, whereas videostroboscopy and laryngeal fiberscopy can usually assess both abducted and adducted conditions with full-color images (eg, bowing of the vocal fold and the prominence of the cartilageous portion).…”

“…16,[24][25][26][27] These features might result from the relatively high density of the vocal fold of young females owing to hormonal effect, and the activity of the crycothyroid and posterior crycoarytenoid muscles, which work in a high-pitch phonation and make the vocal folds tense and slightly abducted. These two factors would lead to a strong contact of the anterior glottis and a weak or incomplete closure of the posterior glottis, and, thus, the opening of the posterior glottis would precede the opening of the anterior glottis.…”

“…On the other hand, the high incidence of axis shift, asymmetry, and lateral phase difference of elderly males was presumably owing to the asymmetry of laryngeal flame, mucoelasticity, tension, and volume of the left and right vocal folds associated with the geriatric change. [25][26][27][28][29][30] Anterior-toposterior longitudinal phase difference frequently seen in this subgroup might be explained by weak closing force in the anterior glottis owing to the atrophic degeneration of lamina propria of the vocal fold or laryngeal musculature. 28,29 Supraglottic hyperactivity is assumed to be the compensation for the atrophic change.…”

Mucosal Wave: A Normophonic Study Across Visualization Techniques

“…50,51 In a preliminary stroboscopic study, 50 37% of normophonic males presented with mucosal wave lateral phase asymmetries. This result was further investigated 51 by reviewing 57 videostroboscopic laryngeal examinations of male and female normophonic speakers.…”

Assessment of the variability of vocal fold dynamics within and between recordings with high‐speed imaging and by phonovibrogram

“…[19][20][21] Irregularities in normal voices have been identified with stroboscopic parameters that are commonly used to describe disordered voices in a clinical setting. 22 Haben, Kost, and Papagiannisi 22 demonstrated the presence of mucosal wave asymmetry in normal voices from males and females by using videostroboscopic data. Shaw and Deliyski 23 further evaluated this conclusion with HSV and reported the presence of atypical magnitude and asymmetry of mucosal wave during different phonation tasks in subjects with normal voices.…”