scholarly journals In vivo measurement of vocal fold surface resistance

2017 ◽  
Vol 127 (10) ◽  
pp. E364-E370
Author(s):  
Masanobu Mizuta ◽  
Takashi Kurita ◽  
Neal P. Dillon ◽  
Emily E. Kimball ◽  
C. Gaelyn Garrett ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Surface Resistance ◽  
In Vivo Measurement

Noncontact Determination of the Mechanical Properties of the Human Vocal Folds

2008 ◽  
Author(s):  
Shinji Deguchi ◽  
Kazutaka Kawashima
Keyword(s):  
Mechanical Properties ◽  
Vocal Fold ◽  
Measurement Techniques ◽  
Voice Quality ◽  
Vocal Folds ◽  
In Vivo Measurement ◽  
In Vitro Measurements ◽  
Excited Oscillation

Mechanical properties of the vocal folds (such as stiffness or viscoelastic properties) play an essential role in phonation. They affect not only voice quality but also onset threshold of vocal fold self-excited oscillation, a sound source of voice [1]. Many experimental data on the mechanical properties have been reported so far, in which in vitro [2] or in vivo measurement techniques [3] were employed. In vitro measurements give us detailed information on the mechanical properties, yet it would be required to consider possible loss of freshness of the specimen. Meanwhile, current in vivo measurement methods utilize a thin probe to deform the vocal fold tissue located at the back of the throat and hence need technical skills for the surveyor to successfully obtain its loading-deformation relationship.

Non-invasive in vivo measurement of the mechanical properties of human vocal fold tissue

2013 ◽  
Vol 133 (5) ◽  
pp. 3617-3617
Author(s):  
Siavash Kazemirad ◽  
Hani Bakhshaei ◽  
Luc Mongeau ◽  
Karen Kost
Keyword(s):  
Mechanical Properties ◽  
Vocal Fold ◽  
In Vivo Measurement ◽  
Non Invasive

scholarly journals Direct Measurement and Modeling of Intraglottal, Subglottal, and Vocal Fold Collision Pressures during Phonation in an Individual with a Hemilaryngectomy

2021 ◽  
Vol 11 (16) ◽  
pp. 7256
Author(s):  
Daryush D. Mehta ◽  
James B. Kobler ◽  
Steven M. Zeitels ◽  
Matías Zañartu ◽  
Emiro J. Ibarra ◽  
...  
Keyword(s):  
Vocal Fold ◽  
High Speed ◽  
Pressure Sensors ◽  
Pressure Probe ◽  
Surgical Removal ◽  
In Vivo Measurement ◽  
Dual Sensor ◽  
The Right ◽  
Collision Pressure

The purpose of this paper is to report on the first in vivo application of a recently developed transoral, dual-sensor pressure probe that directly measures intraglottal, subglottal, and vocal fold collision pressures during phonation. Synchronous measurement of intraglottal and subglottal pressures was accomplished using two miniature pressure sensors mounted on the end of the probe and inserted transorally in a 78-year-old male who had previously undergone surgical removal of his right vocal fold for treatment of laryngeal cancer. The endoscopist used one hand to position the custom probe against the surgically medialized scar band that replaced the right vocal fold and used the other hand to position a transoral endoscope to record laryngeal high-speed videoendoscopy of the vibrating left vocal fold contacting the pressure probe. Visualization of the larynx during sustained phonation allowed the endoscopist to place the dual-sensor pressure probe such that the proximal sensor was positioned intraglottally and the distal sensor subglottally. The proximal pressure sensor was verified to be in the strike zone of vocal fold collision during phonation when the intraglottal pressure signal exhibited three characteristics: an impulsive peak at the start of the closed phase, a rounded peak during the open phase, and a minimum value around zero immediately preceding the impulsive peak of the subsequent phonatory cycle. Numerical voice production modeling was applied to validate model-based predictions of vocal fold collision pressure using kinematic vocal fold measures. The results successfully demonstrated feasibility of in vivo measurement of vocal fold collision pressure in an individual with a hemilaryngectomy, motivating ongoing data collection that is designed to aid in the development of vocal dose measures that incorporate vocal fold impact collision and stresses.

In vivo measurement of the elastic properties of the human vocal fold

2006 ◽  
Vol 263 (5) ◽  
pp. 455-462 ◽  
Author(s):  
Eric Goodyer ◽  
Frank Muller ◽  
Brian Bramer ◽  
Dilip Chauhan ◽  
Markus Hess
Keyword(s):  
Elastic Properties ◽  
Vocal Fold ◽  
In Vivo Measurement

scholarly journals Non-invasive in vivo measurement of the shear modulus of human vocal fold tissue

2014 ◽  
Vol 47 (5) ◽  
pp. 1173-1179 ◽  
Author(s):  
Siavash Kazemirad ◽  
Hani Bakhshaee ◽  
Luc Mongeau ◽  
Karen Kost
Keyword(s):  
Shear Modulus ◽  
Vocal Fold ◽  
In Vivo Measurement ◽  
Non Invasive

scholarly journals Non-invasive in vivo measurement of the mechanical properties of human vocal fold tissue

2013 ◽  
Author(s):  
Siavash Kazemirad ◽  
Hani Bakhshaee ◽  
Luc Mongeau ◽  
Karen Kost
Keyword(s):  
Mechanical Properties ◽  
Vocal Fold ◽  
In Vivo Measurement ◽  
Non Invasive

In vivo measurement of the shear modulus of the human vocal fold: interim results from eight patients

2007 ◽  
Vol 264 (6) ◽  
pp. 631-635 ◽  
Author(s):  
Eric Goodyer ◽  
Frank Müller ◽  
Katharina Licht ◽  
Markus Hess
Keyword(s):  
Shear Modulus ◽  
Vocal Fold ◽  
In Vivo Measurement

scholarly journals In Vivo Measurement of Pediatric Vocal Fold Motion Using Structured Light Laser Projection

2013 ◽  
Vol 27 (4) ◽  
pp. 463-472 ◽  
Author(s):  
Rita R. Patel ◽  
Kevin D. Donohue ◽  
Daniel Lau ◽  
Harikrishnan Unnikrishnan
Keyword(s):  
Vocal Fold ◽  
Structured Light ◽  
In Vivo Measurement ◽  
Vocal Fold Motion
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