The purpose of this study was to analyze and quantify the effects of a nebulized saline treatment on speech production in eight females with Primary Sjögren's Syndrome (SS). The duration, formant frequency onset and offset, and slope were measured to determine the quality of participants' production of diphthongal American English vowels. Acoustic data were examined before treatment began, immediately following treatment, and during a one-week follow-up to determine the effects of a laryngeal hydration program that used nebulized saline to increase hydration of structures in the vocal tract. The vowels produced during the initial baseline condition were acoustically relatively similar to the productions of typical speakers not diagnosed with SS. Although some differences in mean vowel duration and formant frequency values were found in the recorded vowel productions, results indicated that the participants' vowel productions remained relatively stable across the different phases of treatment. The absence of large treatment effects, in terms of vowel acoustics, may be due to the possibility that although the dryness associated with SS is an irratant for speakers, it may not affect their ability to produce diphthongal vowels in a significant manner.
College and Department
David O. McKay School of Education; Communication Disorders
BYU ScholarsArchive Citation
Perry, Keri Lynn, "The Effects of Nebulized Saline Treatments on Diphthongal Vowel Production on Female Subjects with Sjögren's Syndrome" (2014). Theses and Dissertations. 5760.
Sjögren's Syndrome, laryngeal hydration, saline treatments, diphthongs