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KMID : 1004320160270020095
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Journal of the Korean Society of Logopedics and Phoniatrics
2016 Volume.27 No. 2 p.95 ~ p.101
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The Perceptual and Consonant Analysis for the Voice with Hypothyroidism
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Han Baek-Hwa
Lee Da-Hae
Kim Joon-Sun
Hong Ki-Hwan
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Abstract
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Background and Objectives：The main purpose of this study is to clarify perceptual and acoustic analysis for the patients with hypothyroidism after thyroidectomy especially focused on the characteristics of speech articulation with special reference to the consonant production.
Materials and Methods：The subjects of the research were 40 male and female adults (males : 5, females : 35). They were all received radioactive iodine treatment which after total thyroidectomy. Voice samples were collected during the three stages of after surgery, pre-radioisotope treatment (RIT), and post-RIT. The acoustic analysis was conducted by using Pratt (ver.5.2.21) after measuring voice onset time (VOT). The subjective evaluation of the voices used CAPE-V.
Results： A significant decrease in overall severity was displayed in the CAPE-V following RIT. It may be conjectured that this is connected to the change in voice following RIT. The loudness of the sound displayed a significant decrease in the CAPE-V following RIT. It is conjectured that this is connected to the decrease in vocal intensity following RIT. No statistically significant results were revealed for the comparative analysis on the voice onset time (VOT) in all plosives during the three periods.
Conclusion： Perceptually, the overall severity of the voice with hypothyroidism was changed significantly before and after RIT. Eventhough VOT were not significantly changed, it tended to decrease VOT in patients with hypothyroidism.
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KEYWORD
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Thyroidectomy, Hypothyroidism, Voice onset time, CAPE-V
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