Journal article
Twitch Response in the Canine Vocalis Muscle
Journal of speech, language, and hearing research, Vol.30(3), pp.290-294
09/01/1987
DOI: 10.1044/jshr.3003.290
PMID: 3669635
Abstract
The twitch response of the canine vocalis muscle was investigated through a series of experiments conducted in vitro. Samples of vocalis muscle were dissected and prepared from canine larynges a few minutes before death and kept in Krebs solution at a temperature of 37 ± I°C and pH of 7.4 ± 0.05. Field stimulation with parallel-plate silver electrodes was applied to study the twitch response of muscle samples. The peak tension and time course of isometric contraction of isolated muscle samples were measured electronically with a Cambridge Technology Dual Servo System (ergometer). Contraction time and 50% relaxation time of this muscle were measured for seven samples at various levels of strain. It was found that contraction time ranged between 22 and 32 ms and 50% relaxation time ranged between 17 and 37 ms. Results indicate that the vocalis muscle is a fast muscle capable of performing rapid maneuvers in support of changes in fundamental frequency.
Details
- Title: Subtitle
- Twitch Response in the Canine Vocalis Muscle
- Creators
- Fariborz Alipour-Haghighi - University of IowaIngo R. Titze - University of IowaPaul Durham - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of speech, language, and hearing research, Vol.30(3), pp.290-294
- DOI
- 10.1044/jshr.3003.290
- PMID
- 3669635
- ISSN
- 1092-4388
- eISSN
- 1558-9102
- Number of pages
- 5
- Language
- English
- Date published
- 09/01/1987
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719569602771
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