Journal article
Laryngeal Muscle Activity in Giggle: A Damped Oscillation Model
Journal of voice, Vol.22(6), pp.644-648
2008
DOI: 10.1016/j.jvoice.2007.01.008
PMID: 17509825
Abstract
The acoustic properties of giggle, a mild form of laughter, were studied. The purpose was to determine if there is some uniqueness to the frequency and number of vocalization bursts in giggle. The underlying hypothesis was that a neuromechanical oscillator serves as an activator for rhythmic vocalizations, as in vibrato, with a pair of agonist-antagonist adductor muscles alternating in a 180° phase relationship. Electromyographic activity of the posterior cricoarytenoid muscle was always measured, in conjunction with either lateral cricoarytenoid or thyroarytenoid muscle activity. Results indicate that muscle activations do alternate and that these activations do not diminish during successive bursts, even though the amplitude and duty ratio of the bursts decreases. It is reasoned that reduced lung pressure and lung volume limit the number of bursts and their duty ratio, while speed of intrinsic laryngeal muscle contraction dictates the burst frequency.
Details
- Title: Subtitle
- Laryngeal Muscle Activity in Giggle: A Damped Oscillation Model
- Creators
- Ingo R Titze - Department of Speech Pathology and Audiology, The University of Iowa, Iowa City, IowaEileen M Finnegan - Department of Speech Pathology and Audiology, The University of Iowa, Iowa City, IowaAnne-Maria Laukkanen - Department of Speech Communication and Voice Research, University of Tampere, Tampere, FinlandMegan Fuja - Department of Speech Pathology and Audiology, The University of Iowa, Iowa City, IowaHenry Hoffman - Department of Speech Pathology and Audiology, The University of Iowa, Iowa City, Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of voice, Vol.22(6), pp.644-648
- Publisher
- Mosby, Inc
- DOI
- 10.1016/j.jvoice.2007.01.008
- PMID
- 17509825
- ISSN
- 0892-1997
- eISSN
- 1873-4588
- Language
- English
- Date published
- 2008
- Academic Unit
- School of Music; Communication Sciences and Disorders; Radiation Oncology; Otolaryngology
- Record Identifier
- 9984002319302771
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