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Publication

Comparison of speech rate in individuals with Parkinson's disease and healthy controls

Young, Ezekiel
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Abstract

Speech rate deficits are commonly observed in individuals with Parkinson’s disease (PD). Previous literature has presented a variety of outcomes regarding the speech rate of individuals with PD compared to healthy controls, ranging from an increased speech rate to a decreased speech rate. The current study aims to determine the differences in speech rate profile between individuals with PD and healthy controls. Additionally, it attempts to determine the effect of stimulus on speech rate for those with PD compared to healthy controls as well as the correlation between demographic conditions and speech rate. This was achieved through collecting audio recordings of 62 individuals via Zoom and in-person meetings. These meetings included a monologue task, reading task, and picture description task. A repeated measures ANOVA was completed to determine the effect of stimulus on speech rate, and a Pearson bivariate correlation to determine correlation between demographic information and speech rate. The findings of this study found that the participants with PD presented with a significantly faster speech rate compared to the neurologically healthy participants, especially when focusing on the picture description task. The author suggests that the cognitive burden coupled with cognitive-linguistic differences in those with PD may have contributed to the differences in speech rate profile between those with PD and the healthy controls. Additionally, only a significant positive correlation between speech rate and MoCA score was determined in this study, suggesting a faster rate of speech in those with higher cognitive functioning. Further research is required to determine the true nature of speech rate deficits in the overall population of those with Parkinson’s disease.

Date
2024-05
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