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Showing 1 to 20 of 26 for “"Vocal Folds"”.
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Morphology of the Vocal Folds
Made available in DSpace on 2014-12-14T05:26:46Z (GMT). No. of bitstreams: 1 8004190.pdf: 3498479 bytes, checksum: 7c5bbaca981149ec895e5523810f09a5 (MD5) Previous issue date: 1979
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Modeling the Mechanical Effects of Liquid Mediated Adhesion Between the Human Vocal Folds
The vocal folds are a complex self-oscillating biological system. In the current research, an equation was developed to model viscous adhesion forces that occur when the collision of the vocal folds results in the formation of a liquid bridge. The adhesion equation was validated using experimental …
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Modeling and Manufacturing of Dynamic Vocal Folds: First Steps Towards an Active Voice-Box Prosthesis
The movement and control of the vocal folds within the laryngeal cavity enables three crucial physiological functions: 1) allowing respiration by opening, 2) aiding in airway protection by closing, and 3) regulating sound production during phonation. Although treatment options have improved, many …
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HIGH PERFORMANCE AGENT-BASED MODELS WITH REAL-TIME IN SITU VISUALIZATION OF INFLAMMATORY AND HEALING RESPONSES IN INJURED VOCAL FOLDS
… to the inflammatory and healing responses of vocal folds at the physiological scale in mammals. The second direction involves improvements and extensions of the existing state-of-the-art vocal fold repair models. These improvements and extensions include comprehensive visualization of large …
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The biomechanical properties of the human vocal fold.
… is a specialist tissue structure known as the vocal folds, which under muscular control captures energy within the airflow and transfers it to a dynamic phenomena, analogous to a static fluid wave, known as the mucosal wave. This mucosal wave causes the vocal folds to open and close …
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The effects of acidified pepsin on porcine vocal fold tissue: Developing a porcine model of laryngopharyngeal reflux disease
… relating to laryngeal disease because porcine vocal folds are most similar to human vocal folds from a structural, biochemical, neuromuscular, and cellular perspective. By utilizing the pig as a model of laryngeal disease, research involving basic, translational, and clinical questions can be …
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The Physics of Rodent Ultrasonic Vocalizations
… much work has been done on the physics of vocalizations caused by the vibrating motion of vocal folds, relatively little work has been done on the physics of ultrasonic vocalizations (USVs). There are two orders of mammals known to make these kind of vocalizations: cetaceans and rodents. Of …
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The Aging Female Voice: Medical Treatments and Pedagogical Techniques For Combatting the Effects of Aging With Emphasis On Menopause
… of menopause. Estrogen deprivation causes vocal changes including hoarseness, breathiness and a reduction in range. In addition, a swelling of the vocal folds and changes in the amount and consistency of the mucous membranes lining the vocal tract are all concerns. Although it is impossible …
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Changing her tune : how a transsexual woman claims a new identity through voice
… gender transition. Males have larger and heavier vocal apparatuses (larynx and vocal folds), which generally produce a lower sound. Transgender women can have voice surgery, but it can sometimes cause a Minnie Mouse-like falsetto or the complete loss of the voice. As a result, many transgendered …
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Characterization of the vocal fold lamina propria towards voice restoration
During normal speech, human vocal folds sustain greater than 100 high impact collisions each second. When the pliability of this complex biomechanical system is reduced by scarring, voice quality may be compromised. Currently, little can be done to treat patients affected with voice loss or chronic …
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Deep Learning-Based Classification of Phonotraumatic Vocal Hyperfunction Severity from Stroboscopic Images
Phonotraumatic vocal hyperfunction (PVH) is a vocal disorder characterized by damaged vocal folds from excessive or abusive voice use. Clinical assessment of PVH relies on timeconsuming videostroboscopy examination, which poses challenges for large-scale clinical studies. We address the need for …
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Characterization and Improvement of the Clinical Assessment of Vocal Hyperfunction
Vocal hyperfunction refers to "conditions of abuse and/or misuse of the vocal mechanism due to excessive and/or 'imbalanced' muscular forces" (Hillman, Holmberg, Perkell, Walsh, & Vaughan, 1989), characterized by excessive laryngeal and paralaryngeal tension (Aronson, 1980; M. D. Morrison, Rammage, …
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Digital signal processing techniques for application in the analysis of pathological voice and normophonic singing voice
Singing voice is one specific example of vocal sound made by human beings. If we consider the larynx apparatus as a type of singing instrument then we can further say that sung voice is perhaps the best and most stable utilisation of such an instrument. Singing remains at a stable pitch over time, …
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Understanding the operatic tenor's legitimate head voice: A comparative study of historical and modern pedagogical approaches
… century. Notwithstanding this change in tenor vocality, the practice of register-blending or -unification, originally developed by the castrati as a means of extending their voices upwards with a seamless transition to the falsetto register, has remained a core element of classical voice …
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Vocal health and repertoire for the dramatic mezzo-soprano : a suggested course of study
Vocal Health and Repertoire for the Dramatic Mezzo-Soprano: A Suggested Course of Study brings together the fields of vocal pedagogy and performance. This curriculum guide focuses on repertoire for the Dramatic Mezzo-Soprano, ages 18-30. The guide includes selections from the genres of art song …
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Vocal Fold Analysis From High Speed Videoendoscopic Data
… the limits of videostroboscopy in evaluating the vocal fold vibratory behavior by providing much higher frame rate. HSV enables the visualization of vocal fold vibratory pattern within an actual glottic cycle. This very detailed infor-mation on vocal fold vibratory characteristics could provide …
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Kinematic Modeling of Asymmetric Vocal Fold Vibration
Asymmetries of the vocal folds and vocal fold vibration are key features underlying unilateral vocal fold motion impairment (VFMI). The knowledge of what particular asymmetries contribute to breathy voice and which asymmetries must be eliminated to re-establish normal voice will be important to …
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Analysis of the pressure-wall interaction at the release of a stop closure
… effect during the closing and opening of the vocal folds and during the initial transient phase of a stop consonant, when the cross-sectional area is small. Indirect means of measuring an unknown parameter in the pressure-wall interaction analysis is discussed with the aid of a closure model …
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Targeting Airway Microbiome Dysbiosis for Preventing Pediatric Subglottic Stenosis
… a fibrous scar and airway narrowing between the vocal folds and the inferior border of the cricoid cartilage. Most cases require repeated endoscopic interventions to open the airway and severe cases require invasive surgeries like laryngotracheal reconstruction. Independent of severity, most SGS …
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Developing a Drug Delivery System for Treatment of Vocal Fold Scarring
<p>Vocal fold scarring is an affliction that results in the formation of a disorganized and stiff extracellular matrix (ECM) with abnormal ECM component densities & structures including a significant increase in collagen deposition. It is caused by improper healing post injury and results in …
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