Glottal aerodynamic measures in women with phonotraumatic and nonphonotraumatic vocal hyperfunction
Author
dc.contributor.author
Espinoza Catalán, Víctor
Author
dc.contributor.author
Zañartu, Matías
Author
dc.contributor.author
Van Stan, Jarrad H.
Author
dc.contributor.author
Mehta, Daryush D.
Author
dc.contributor.author
Hillman, Robert E.
Admission date
dc.date.accessioned
2018-06-27T14:27:41Z
Available date
dc.date.available
2018-06-27T14:27:41Z
Publication date
dc.date.issued
2017
Cita de ítem
dc.identifier.citation
Journal of Speech, Language, and Hearing Research, Vol. 60 (8): 2159–2169
es_ES
Identifier
dc.identifier.other
10.1044/2017_JSLHR-S-16-0337
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/149274
Abstract
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Purpose: The purpose of this study was to determine the validity of preliminary reports showing that glottal aerodynamic measures can identify pathophysiological phonatory mechanisms for phonotraumatic and nonphonotraumatic vocal hyperfunction, which are each distinctly different from normal vocal function.
Method: Glottal aerodynamic measures (estimates of subglottal air pressure, peak-to-peak airflow, maximum flow declination rate, and open quotient) were obtained noninvasively using a pneumotachograph mask with an intraoral pressure catheter in 16 women with organic vocal fold lesions, 16 women with muscle tension dysphonia, and 2 associated matched control groups with normal voices. Subjects produced /pae/ syllable strings from which glottal airflow was estimated using inverse filtering during /ae/ vowels, and subglottal pressure was estimated during /p/ closures. All measures were normalized for sound pressure level (SPL) and statistically tested for differences between patient and control groups.
Results: All SPL-normalized measures were significantly lower in the phonotraumatic group as compared with measures in its control group. For the nonphonotraumatic group, only SPL-normalized subglottal pressure and open quotient were significantly lower than measures in its control group.
Conclusions: Results of this study confirm previous hypotheses and preliminary results indicating that SPL-normalized estimates of glottal aerodynamic measures can be used to describe the different pathophysiological phonatory mechanisms associated with phonotraumatic and nonphonotraumatic vocal hyperfunction.
es_ES
Patrocinador
dc.description.sponsorship
National Institute on Deafness and Other Communication Disorders
R33 DC011588
P50 DC015446
F31 DC014412
CONICYT
FONDECYT 1151077
BASAL FB0008
UTFSM
PIIC 2014
FSM1204
Harvard Catalyst: The Harvard Clinical and Translational Science Center (National Center for Research Resources and the National Center for Advancing Translational Sciences, National Institutes of Health)
UL1 TR001102