INTRODUCTION AND OBJECTIVES Vocal fold paralysis (VFP) is a relatively common cause of stridor and dysphonia in the paediatric population. This report summarises our experience with VFP in the paediatric age group. METHODS All patients presenting with vocal fold paralysis over a 12-month period were included. Medical charts were revised retrospectively. The diagnosis was performed by flexible...

OBJECTIVES/HYPOTHESIS Digital kymography (DKG) can provide objective quantitative data about vocal fold vibration, which may help distinguish normal from pathological vocal folds as well as nodules from polyps. STUDY DESIGN Case-control study. METHODS There were 87 subjects who were separated into three groups: control, nodules, and unilateral polyps, and examined using a high-speed camera ...

OBJECTIVES To describe the range of findings in patients with neurofibromatosis (NF) presenting to a laryngology clinic and to analyze the etiologic factors of vocal fold dysfunction in this cohort. STUDY DESIGN Case series with chart review. SETTING Tertiary laryngology practice. SUBJECTS AND METHODS All cases of NF presenting to an academic laryngology practice were retrospectively revi...

The influence of the thyroarytenoid (TA) and cricothyroid (CT) muscle activation on vocal fold stiffness and eigenfrequencies was investigated in a muscularly controlled continuum model of the vocal folds. Unlike the general understanding that vocal fold fundamental frequency was determined by vocal fold tension, this study showed that vocal fold eigenfrequencies were primarily determined by vo...

and introduction We present in this study experimental and theoretical results concerning the behaviour of the airflow through the glottis during phonation. This work follows our previous study on the behaviour of the flow in asymmetric models of vocal folds modelling pathologies ([6]). For sake of better control of the parameters, the vocal folds models were rigid but supplied with oscillating...

This report is on direct observation and modal analysis of irregular spatio-temporal vibration patterns of vocal fold pathologies in vivo. The observed oscillation patterns are described quantitatively with multiline kymograms, spectral analysis, and spatio-temporal plots. The complex spatio-temporal vibration patterns are decomposed by empirical orthogonal functions into independent vibratory ...