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Characterization of Raised Phonation in an Evoked Rabbit Phonation Model by Erik R. Swanson; Davood Abdollahian; Tsunehisa Ohno; Pingjiang Ge; David L. Zealear; Bernard Rousseau is a Medicine article available to read on EtoBox.

What is Characterization of Raised Phonation in an Evoked Rabbit Phonation Model about?

## Abstract ## Objectives/Hypothesis: Our laboratory has developed an in vivo rabbit model to investigate the effects of phonation on expression and turnover of the vocal fold extracellular matrix. As a logical outgrowth of this research to include phonotrauma in the present study, we investigated the hypothesis that an increase in airflow rate delivered to the glottis produces a change in glottal configuration and an increase in mean phonation intensity. ## Study Design: Prospective animal study. ## Methods: Six New Zealand white breeder rabbits weighing 3 to 5 kg were used in this study. A rigid endoscope and camera were used to document glottal configuration. Acoustic signals of modal and raised phonation were recorded and digitized. Two separate one‐way repeated measures analysis of variance (ANOVA) tests were used to investigate within subject differences in phonation intensity and fundamental frequency between modal and raised phonation. ## Results: Phonation intensity was 54.19 dB SPL (6.21 standard deviations [SD]) during modal phonation, and 60.31 dB SPL (5.68 SD) during raised phonation. Endoscopic images revealed a convergent glottis, with greater separation of the vocal

Who reads Characterization of Raised Phonation in an Evoked Rabbit Phonation Model?

Author

Erik R. Swanson; Davood Abdollahian; Tsunehisa Ohno; Pingjiang Ge; David L. Zealear; Bernard Rousseau

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley (ISSN 0023-852X)

Published

2009

Language

EN

Field

Medicine (Health Sciences)