Journal article
A methodological study of hemilaryngeal phonation
The Laryngoscope, Vol.103(8), pp.872-882
08/1993
DOI: 10.1288/00005537-199308000-00008
PMID: 8361290
Abstract
An excised hemilarynx setup was developed. The phonatory characteristics of nine excised canine larynges were examined. The left vocal fold of each larynx was then removed and substituted with a vertical plexiglass plate. The larynges were phonated again. Recordings were made of phonation threshold pressure, sound pressure level, average glottal flow, fundamental frequency, and amplitude of vocal fold vibration as observed with a video stroboscope. Measurements were made over a range of subglottal pressures. For the hemilarynx, simultaneous recordings of intraglottal pressure and vocal fold contact area were also made. It was found that amplitude and frequency of vocal fold vibration of the hemilarynx, as well as rates of change of amplitude and frequency as a function of subglottal pressure, were similar to those of the full larynx. Also similar were phonation threshold pressures and ranges of subglottal pressure over which the larynges phonated. The average airflow of the hemilarynx was approximately half that of the full larynx, and the sound pressure level, under similar conditions, was one fourth (about 6 dB less) in the hemilarynx.
Details
- Title: Subtitle
- A methodological study of hemilaryngeal phonation
- Creators
- Jack Jiaqi Jiang - University of IowaIngo R. Titze - University of Iowa
- Resource Type
- Journal article
- Publication Details
- The Laryngoscope, Vol.103(8), pp.872-882
- Publisher
- John Wiley & Sons, Inc
- DOI
- 10.1288/00005537-199308000-00008
- PMID
- 8361290
- ISSN
- 0023-852X
- eISSN
- 1531-4995
- Number of pages
- 11
- Language
- English
- Date published
- 08/1993
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719753602771
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