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VOICE ONSET TIME IN PARKINSON DISEASE

Budkowski, Emily T
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1174747354

Abstract Details

2007, Master of Science (MS), Bowling Green State University, Communication Disorders/Speech-Language Pathology.
Research examining Voice Onset Time (VOT) in individuals with Parkinson Disease (PD) has shown mixed results. Some research has shown longer VOTs, some have found shorter VOTs, while others have found a similar VOT between individuals with PD and controls. Previous research in non-neurologically impaired individuals has found that changes in speaking rate have an effect on VOT. Given that individuals with PD are known to exhibit speaking rate differences compared to controls, the current study examined VOT in individuals with PD based on two different measures: (1) the conventional VOT measure (VOT); and (2) VOT with the effect of rate removed (VOT Ratio). Results indicated a significant effect of place of articulation for voiceless sounds and a significant vowel height effect for the VOT ratio of voiceless sounds. Results indicated that there were no significant differences between the PD groups compared to controls for both VOT and VOT ratio. Within the PD group, levodopa appeared to have a greater effect on VOT than VOT ratio, meaning that the difference was actually more reflective of a medication-related rate change, rather than a pure VOT change. Overall, the current data support the usefulness of examining both VOT and VOT ratio with individuals with PD, as this method allows for dissociation between rate-related changes and true VOT-related changes.
Alexander Goberman (Advisor)
64 p.
Parkinson Disease; Voice Onset Time

Recommended Citations

Citations

  • Budkowski, E. T. (2007). VOICE ONSET TIME IN PARKINSON DISEASE [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1174747354

    APA Style (7th edition)

  • Budkowski, Emily. VOICE ONSET TIME IN PARKINSON DISEASE. 2007. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1174747354.

    MLA Style (8th edition)

  • Budkowski, Emily. "VOICE ONSET TIME IN PARKINSON DISEASE." Master's thesis, Bowling Green State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1174747354

    Chicago Manual of Style (17th edition)

bgsu1174747354
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© 2007, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.