Journal article
The membranous contact quotient: A new phonatory measure of glottal competence
Journal of voice, Vol.11(3), pp.277-284
1997
DOI: 10.1016/S0892-1997(97)80005-7
PMID: 9297671
Abstract
The membranous contact quotient (MCQ) is introduced as a measure of dynamic glottal competence. It is defined as the ratio of the membranous contact glottis (the anterior-posterior length of contact between the two membranous vocal folds) and the membranous vocal fold length. An elliptical approximation to the vocal fold contour during phonation was used to predict MCQ values as a function of vocal process gap (adduction), maximum glottal width, and membranous glottal length. MCQ is highly dependent on the vocal process gap and the maximum glottal width, but not on vocal fold length. Five excised larynges were used to obtain MCQ data for a wide range of vocal process gaps and maximum glottal widths. Predicted and measured MCQ values had a correlation of 0.93, with an average absolute difference of 9.6% (SD = 10.5%). The model is better at higher values of MCQ. The theory for MCQ is also expressed as a function of vocal process gap and subglottal pressure to suggest production control potential. The MCQ measure is obtainable with the use of stroboscopy and appears to be a potentially useful clinical measure.
Details
- Title: Subtitle
- The membranous contact quotient: A new phonatory measure of glottal competence
- Creators
- Ronald C Scherer - Wilbur James Gould Voice Research Center, The Denver Center for the Performing Arts, Denver, Colorado, USAFariborz Alipour - Department of Speech Pathology and Audiology, The University of lowa, lowa City, Iowa, U.S.AEileen Finnegan - Department of Speech Pathology and Audiology, The University of lowa, lowa City, Iowa, U.S.AChwen Geng Guo - Wilbur James Gould Voice Research Center, The Denver Center for the Performing Arts, Denver, Colorado, USA
- Resource Type
- Journal article
- Publication Details
- Journal of voice, Vol.11(3), pp.277-284
- Publisher
- Mosby, Inc
- DOI
- 10.1016/S0892-1997(97)80005-7
- PMID
- 9297671
- ISSN
- 0892-1997
- eISSN
- 1873-4588
- Language
- English
- Date published
- 1997
- Academic Unit
- Communication Sciences and Disorders
- Record Identifier
- 9984002410702771
Metrics
18 Record Views