Year of Award

1981

Document Type

Thesis

College

College of Education and Allied Health

Degree Name

Master of Science (MS)

Department

Communication Disorders and Deaf Education

First Advisor

Carolyn Jones-Hellmuth

Abstract

The purpose of this study was to investigate the differences of maximum phonation time and fundamental frequency through the objective measurement of the Visi-Pitch between individuals with hemilaryngectomy and unilateral adductor vocal cord paralysis. Data of the two pathological groups were compared to each other and to the normative standards. Ten male adult subjects were studied. Five were hemilaryngectomees and five had unilateral adductor vocal cord paralysis. Each subject phonated /a/ for as long as possible on three trials and the mean maximum phonation time was calculated. The second trial of the three trials for maximum phonation time was used to determine the fundamental frequency recorded on the Visi-Pitch. The data from the two groups were analyzed for differences using a two-tailed t test and a single one-tailed t test was used to compare normative standards to each of the pathological groups. The findings from this study determined that the differences in fundamental frequency and maximum phonation time between the two pathological groups were not significant. The difference in fundamental frequency between the normative standard and the two pathological groups was found to be not significant. The difference in the maximum phonation time between the normative standard and the two pathological groups was found to be significant.

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