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In spite of the presumed importance of the strap muscles on laryngeal valving and speech production, there is little research concerning the physiological role and the functional differences among the strap muscles. Generally, the strap muscles have been shown to cause a decrease in the fundamental frequency (F0) of phonation during contraction. In this study, an in vivo canine laryngeal model was used to show the effects of strap muscles on the laryngeal function by measuring the F0, subglottic pressure, vocal intensity, vocal fold length, cricothyroid distance, and vertical laryngeal movement. Results demonstrated that the contraction of sternohyoid and sternothyroid muscles corresponded to a rise in subglottic pressure, shortened cricothyroid distance, lengthened vocal fold, and raised F0 and vocal intensity. The thyrohyoid muscle corresponded to lowered subglottic pressure, widened cricothyroid distance, shortened vocal fold, and lowered F0 and vocal intensity. We postulate that the mechanism of altering F0 and other variables after stimulation of the strap muscles is due to the effects of laryngotracheal pulling, upward or downward, and laryngotracheal forward bending, by the external forces during strap muscle contraction.
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
January 1989,
American journal of otolaryngology,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
September 1989,
The Laryngoscope,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
June 2015,
The Laryngoscope,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
March 2018,
The Annals of otology, rhinology, and laryngology,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
February 1988,
The Journal of the Acoustical Society of America,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
June 1972,
The Annals of otology, rhinology, and laryngology,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
October 1994,
The Laryngoscope,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
March 1995,
Yonsei medical journal,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
December 1993,
Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery,
K H Hong, and
M Ye, and
Y M Kim, and
K F Kevorkian, and
G S Berke
July 1965,
Archiv fur Ohren-, Nasen- und Kehlkopfheilkunde,
