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KMID : 0917520060130010095
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Journal of Speech Sciences
2006 Volume.13 No. 1 p.95 ~ p.105
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The Effects of Pitch Increasing Training (PIT) on Voice and Speech of a Patient with Parkinson’s Disease: A Pilot Study
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Lee Ok-Bun
Jeong Ok-Ran
Shim Hong-Im
Jeong Han-Jin
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Abstract
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The primary goal of therapeutic intervention in dysarthric speakers is to increase the speech intelligibility. Decision of critical features to increase the intelligibility is very important in speech therapy. The purpose of this study is to know the effects of pitch increasing training (PIT) on speech of a subject with Parkinson’s disease (PD). The PIT program is focused on increasing pitch while a vowel is sustained with the same loudness. The loudness level is somewhat higher than that of the habitual loudness. A 67-year-old female with PD participated in the study. Speech therapy was conducted for 4 sessions (200 minutes) for one week. Before and after the treatment, acoustic, perceptual and speech naturalness evaluation was peformed for data analysis. Speech and voice satisfaction index (SVSI) was obtained after the treatment. Results showed Improvements in voice quality and speech naturalness. In addition, the patient’s satisfaction ratings (SVSI) indicated a positive relationship between improved speech production and their (the patient and care-givers) satisfaction.
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KEYWORD
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Parkinson’s disease, intelligibility, pitch increasing training (PIT), speech naturalness, speech and voice satisfaction index (SVSI)
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