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Effect Of Speaking Rate Modification On Articulation And Pause Characteristics In Individuals With Parkinson’s Disease

Yukti Ajwani, Rohini Chand-Mall

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The purpose of this study was to examine effect of rate modification on parameters of rate in individuals with idiopathic Parkinson’s disease. Fifteen native Marathi speakers within the age range of 50 – 80 years with Idiopathic Parkinson’s Disease (PD) and fifteen healthy controls (HC) participated in the study. The participants read a Marathi passage at three rate conditions; habitual, fast and slow. Speaking rate, articulation rate, pause duration, and pause frequency was extracted for the two speaker groups using PRAAT software. Findings of the study show that for PD speakers, the average speaking rate, & articulation rate was reduced but pause duration and pause frequency was increased as compared to HC speakers. The PD speakers altered their rate and pause characteristics in a similar way as done by HC speakers to achieve speaking rate changes, however, the extent of change was lesser for PD speakers.

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