Aerodynamic impact of the ventricular folds in computational larynx models

2019 ◽  
Vol 145 (4) ◽  
pp. 2376-2387 ◽  
Author(s):  
Hossein Sadeghi ◽  
Michael Döllinger ◽  
Manfred Kaltenbacher ◽  
Stefan Kniesburges
Keyword(s):  
Ventricular Folds

scholarly journals Modeling the Biomechanical Influence of Epilaryngeal Stricture on the Vocal Folds: A Low-Dimensional Model of Vocal–Ventricular Fold Coupling

2014 ◽  
Vol 57 (2) ◽  
Author(s):  
Scott R. Moisik ◽  
John H. Esling
Keyword(s):  
Dynamical Behavior ◽  
Model Performance ◽  
Vocal Folds ◽  
Element Model ◽  
Dynamical Response ◽  
Lumped Element ◽  
Glottal Stop ◽  
Lumped Element Model ◽  
Low Dimensional ◽  
Ventricular Folds

Purpose Physiological and phonetic studies suggest that, at moderate levels of epilaryngeal stricture, the ventricular folds impinge upon the vocal folds and influence their dynamical behavior, which is thought to be responsible for constricted laryngeal sounds. In this work, the authors examine this hypothesis through biomechanical modeling. Method The dynamical response of a low-dimensional, lumped-element model of the vocal folds under the influence of vocal–ventricular fold coupling was evaluated. The model was assessed for F0 and cover-mass phase difference. Case studies of simulations of different constricted phonation types and of glottal stop illustrate various additional aspects of model performance. Results Simulated vocal–ventricular fold coupling lowers F0 and perturbs the mucosal wave. It also appears to reinforce irregular patterns of oscillation, and it can enhance laryngeal closure in glottal stop production. Conclusion The effects of simulated vocal–ventricular fold coupling are consistent with sounds, such as creaky voice, harsh voice, and glottal stop, that have been observed to involve epilaryngeal stricture and apparent contact between the vocal folds and ventricular folds. This supports the view that vocal–ventricular fold coupling is important in the vibratory dynamics of such sounds and, furthermore, suggests that these sounds may intrinsically require epilaryngeal stricture.

Acoustic Impact of Ventricular Folds on Phonation Studied in Ex Vivo Human Larynx Models

2016 ◽  
Vol 102 (2) ◽  
pp. 244-256 ◽  
Author(s):  
V. Birk ◽  
A. Sutor ◽  
M. Döllinger ◽  
C. Bohr ◽  
S. Kniesburges
Keyword(s):  
Ex Vivo ◽  
Human Larynx ◽  
Acoustic Impact ◽  
Ventricular Folds

Acoustic Analysis of Diplophonia: A Follow-up Report

1993 ◽  
Vol 77 (3) ◽  
pp. 914-914 ◽  
Author(s):  
Lee Terrio ◽  
Diane Schreibweiss-Merin
Keyword(s):  
Adult Female ◽  
Acoustic Analysis ◽  
Vocal Folds ◽  
Endoscopic Examination ◽  
Additional Information ◽  
Ventricular Folds

Additional information on the physiology of the diplophonic speech produced by an adult female is provided. Direct endoscopic examination of the subject's laryngeal mechanism showed her diplophonia was produced by exerting differential tension on her vocal folds. The ventricular folds were not directly involved.

Computational aeroacoustics of phonation, Part II: Effects of flow parameters and ventricular folds

2002 ◽  
Vol 112 (5) ◽  
pp. 2147-2154 ◽  
Author(s):  
Cheng Zhang ◽  
Wei Zhao ◽  
Steven H. Frankel ◽  
Luc Mongeau
Keyword(s):  
Computational Aeroacoustics ◽  
Flow Parameters ◽  
Ventricular Folds

Influence of False Vocal Folds Gap on the Glottal Jet Flow

2012 ◽  
Author(s):  
Mehrdad H. Farahani ◽  
John Mousel ◽  
Fariborz Alipour ◽  
Sarah Vigmostad
Keyword(s):  
Vocal Folds ◽  
Jet Flow ◽  
Modern Life ◽  
False Vocal ◽  
Ventricular Folds ◽  
Shape And Size

Despite the large incidence of speech problems in the modern life, our knowledge about the effect of supraglottic laryngeal structures on human phonation is lacking. These structures are mainly consisting of aryepiglottic folds, epiglottis, arytenoids, and false folds (ventricular folds). Shape and size of these structures depends on several factors including race, gender, age, and laryngeal abnormalities.

scholarly journals Laryngeal schwannoma presented as globus sensation

2017 ◽  
Vol 5 (1) ◽  
pp. 24-25
Author(s):  
A. KC ◽  
Dipesh Shakya ◽  
A. Nepal
Keyword(s):  
Case Report ◽  
Vocal Cord ◽  
Female Patient ◽  
Anatomical Site ◽  
Present Case Report ◽  
Globus Sensation ◽  
Aryepiglottic Fold ◽  
Laryngeal Tumours ◽  
Ventricular Folds

Laryngeal Schwannoma is an extremely rare with incidence of 0.1 – 1.5% in all benign laryngeal tumours making it difficult to diagnose. The most common anatomical site is the aryepiglottic fold, followed by the arytenoids, ventricular folds, and vocal cord. Most patients present with hoarseness, dysphagia or globus sensation.The present case report describes a 37 year old female patient with symptoms of globus sensation.

scholarly journals Schwannoma of False Vocal Cord - A Rare Entity

2021 ◽  
Vol 1 (1) ◽  
pp. 60-63
Author(s):  
Arju Deo ◽  
Daisy Maharjan ◽  
Alina Karna
Keyword(s):  
Vocal Cord ◽  
Postoperative Recovery ◽  
Rare Entity ◽  
Common Site ◽  
Laryngeal Surgery ◽  
Aryepiglottic Fold ◽  
Laryngeal Tumors ◽  
False Vocal ◽  
Ventricular Folds

Laryngeal Schwannoma is rare comprising 0.1 – 1.5% of all benign laryngeal tumors. The most common site in larynx is aryepiglottic fold followed by arytenoids, ventricular folds, and vocal cord. Patients present with the symptoms of hoarseness, dysphagia or globus sensation. We present a 33-year-old male with supraglottic schwannoma who experienced hoarseness of voice for three months. The patient underwent micro laryngeal surgery and submucosal solid tumor of false vocal cord was removed. Postoperative recovery was uneventful and after one month of follow up the patient was improving with no hoarseness of voice.

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