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Abstract:
The contractile properties of the five intrinsic muscles of
the larynx have been measured in terms of maximum active stress,
passive stress, activation time, contraction time, and maximum
shortening velocity. Using these properties, the forces and
torques governing translation and rotation of the laryngeal
cartilates (cricoid, thyroid, and arytenoid) are quantified. The
motions between these cartilages define the elongation and
adduction (collectively referred to as posturing) of the vocal
folds. The cartilagenous glottis (glottal chink) can be
controlled separately from the membranous glottis by specifying
normalized activities of lateral cricoarytenoid, posterior
cricoarytenoid, and interarytenoid muscles. This two- part
glottis can produce separate flow channels in an interactive
glottal source model.
This work was supported by Grant #P60 DC00976 from the
National Institute on Deafness and Other Communication
Disorders.
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