Phonetics and Speech Sciences (말소리와 음성과학)

Korean Society of Speech Sciences (한국음성학회)
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Rate and Regularity of Articulatory Diadochokinetic Performance in Healthy Korean Elderly via Acoustic Analysis

음향학적 분석을 통한 노년층 연령에 따른 조음교대운동의 속도 및 규칙성

  • 조윤희 (연세대학교 대학원 언어병리학협동과정) ;
  • 김향희 (연세대학교 대학원 언어병리학협동과정, 연세대학교 의과대학 재활의학교실 및 재활의학연구소)
  • Received : 2013.07.31
  • Accepted : 2013.09.03
  • Published : 2013.09.30
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Abstract

Aging is related to anatomical and physiological changes in respiratory and phonation organs. These changes influence articulation which leads to inaccurate speech and slow articulatory diadochokinesis(DDK). DDK indicates the range, rate, regularity, accuracy, and agility of articulation that reflect motor speech function. The purpose of this study is to investigate the rates and regularities of DDK in healthy Korean elderly through passive acoustic analysis (Praat). Thirty subjects between the ages of 65 and 94 participated in this study. Rate was observed for 5 seconds, while regularity was calculated based on the standard deviation on the following: 1) syllable duration of each task; 2) gap duration between syllables. Then, simple regression analysis was conducted in order to examine the effect of age on performance. The result showed that the slow rate was not a significant factor in terms of advancing age. Furthermore, regularity indicated a significant difference in the following: 1) /pʌ/, /kʌ/ and /pʌtʌkʌ/ in syllable duration; 2) /kʌ/ duration in the gap between syllables. In conclusion, articulatory coordination is reduced with the onset of aging. In particular, /kʌ/ would be a sensitive task for articulatory coordination.

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References

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