Journal article
The Effect of Cricothyroid Muscle Action on the Relation Between Subglottal Pressure and Fundamental Frequency in an In Vivo Canine Model
Journal of voice, Vol.15(2), pp.187-193
06/01/2001
DOI: 10.1016/S0892-1997(01)00020-0
PMID: 11411473
Abstract
The relation between subglottal pressure (
P
s
) and fundamental frequency (
F
0) in phonation was investigated with an
in vivo canine model. Direct muscle stimulation was used in addition to brain stimulation. This allowed the
P
s
-
F
0 slope to be quantified in terms of cricothyroid muscle activity. Results showed that, for ranges of 0–2 mA constant current stimulation of the cricothyroid muscle, the
P
s
-
F
0 slope ranged from 10 Hz/kPa to 60 Hz/kPa. These results were compared to similar slopes obtained in a previous study on excised larynges in which the vocal fold length was varied instead of cricothyroid activation. A physical interpretation of the
P
s
-
F
0 slope is that the amplitude-to-length ratio of the vocal folds decreases with CT activity, resulting in a smaller time-varying stiffness. In other words, there is less dependence of
F
0 on amplitude of vibration when the vocal folds are long instead of short.
Details
- Title: Subtitle
- The Effect of Cricothyroid Muscle Action on the Relation Between Subglottal Pressure and Fundamental Frequency in an In Vivo Canine Model
- Creators
- Tzu-Yu Hsiao - National Taiwan UniversityChia-Ming Liu - National Taiwan UniversityErich S. Luschei - University of IowaIngo R. Titze - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of voice, Vol.15(2), pp.187-193
- Publisher
- Mosby, Inc
- DOI
- 10.1016/S0892-1997(01)00020-0
- PMID
- 11411473
- ISSN
- 0892-1997
- eISSN
- 1873-4588
- Number of pages
- 7
- Language
- English
- Date published
- 06/01/2001
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719575702771
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