title: Intraglottal pressure distribution computed from empirical velocity data in canine larynx.
abstract: Intraglottal velocity measurements were taken using particle image velocimetry and the corresponding estimates for the intraglottal pressure were computed using the pressure Poisson equation. Results from five canine larynges showed that when the flow separated from the divergent glottal walls during closing, the vortices that were formed in the separated region of the glottis created negative pressure near the superior aspect of the folds. The magnitude of the negative pressure was directly proportional to the subglottal pressure. At low subglottal pressure, negative pressures at the superior edge were not observed when the divergence angle of the wall was minimal and the glottal flow did not separate from the wall.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267-0528, USA. Electronic address: orenl@ucmail.uc.edu.
authors.forename: Liran
authors.initials: L
authors.lastname: Oren
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267-0528, USA.
authors.forename: Sid
authors.initials: S
authors.lastname: Khosla
authors.affiliation: Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, 310 Rhodes Hall, Cincinnati, OH 45221-0070, USA.
authors.forename: Ephraim
authors.initials: E
authors.lastname: Gutmark
mesh_terms: D000818:Animals; D002356:Cartilage / Q000502:physiology; D004285:Dogs; D005931:Glottis / Q000502:physiology*; D007830:Larynx / Q000502:physiology*; D016012:Poisson Distribution; D011312:Pressure; D012212:Rheology; D013314:Stress, Mechanical; D014827:Vocal Cords / Q000502:physiology; D014828:Vocalization, Animal / Q000502:physiology*
keywords: Glottal dynamics; Intraglottal pressure; Vocal folds