Document Detail

Effect of subglottic pressure on fundamental frequency of the canine larynx with active muscle tensions.
MedLine Citation:
PMID:  7944175     Owner:  NLM     Status:  MEDLINE    
The relation between subglottic pressure and the fundamental frequency of vocal fold vibration was studied by means of evoked phonation in an in vivo canine model. The evoked-phonation model involved electrical stimulation of the midbrain that resulted in consistent responses by respiratory and laryngeal musculature, accompanied by phonation. The dynamic stiffness properties of the vocal folds, especially the "cover," were investigated by delivering various amounts of air pressure to the larynx from an opening in the trachea. The fundamental frequency of vocal fold vibration increased linearly with subglottic pressure. The slopes ranged from 22.4 to 118.7 Hz per kilopascal in 7 animals. The results indicated that the dependence of fundamental frequency on subglottic pressure is a passive mechanical phenomenon.
T Y Hsiao; N P Solomon; E S Luschei; I R Titze; K Liu; T C Fu; M M Hsu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Annals of otology, rhinology, and laryngology     Volume:  103     ISSN:  0003-4894     ISO Abbreviation:  Ann. Otol. Rhinol. Laryngol.     Publication Date:  1994 Oct 
Date Detail:
Created Date:  1994-11-16     Completed Date:  1994-11-16     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0407300     Medline TA:  Ann Otol Rhinol Laryngol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  817-21     Citation Subset:  AIM; IM    
Department of Otolaryngology, College of Medicine, National Taiwan University, Taipei, Republic of China.
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MeSH Terms
Electric Stimulation
Glottis / physiology*
Laryngeal Muscles / physiology*
Mesencephalon / physiology
Muscle Tonus / physiology
Phonation / physiology*
Respiration / physiology
Vocal Cords / physiology*
Vocalization, Animal / physiology
Grant Support

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