Phonetics and Speech Sciences (말소리와 음성과학)

Korean Society of Speech Sciences (한국음성학회)
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Relationship between the Maximal Tongue and Lip Strength and Percentage of Correct Consonants and Speech Intelligibility in Dysarthric Adults with Cerebral Palsy

뇌성마비로 인한 마비말장애 성인의 최대 혀 및 입술 강도와 자음정확도 및 말명료도의 관계

  • 최여진 (하나아동발달센터 언어치료실, 이화여자대학교) ;
  • 심현섭 (이화여자대학교 대학원 언어병리학과)
  • Received : 2013.04.30
  • Accepted : 2013.06.12
  • Published : 2013.06.30
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Abstract

The purpose of this study was to identify the relationship between the strength of the tongue/lip strength and speech production for dysarthric adults with cerebral palsy. The maximal tongue and lip strengths of 22 normal adults, 27 dysarthric adults (10 adults with mild dysarthria, 10 adults with moderate dysarthria, and 7 adults with severe dysarthria) were measured with Iowa Oral Performance Instrument (IOPI). The percentage of correct consonants (PCC) and speech intelligibility were calculated from the words and sentences spoken by the subjects. The results of the study are as follows: First, both the maximal tongue and the maximal lip strength differed significantly between the control group and the group with dysarthria. While the group with mild dysarthria did not show meaningful difference in maximal tongue and lip strengths from the control group, the group with moderate and severe dysarthria showed significantly weaker tongue and lip strength than the control group and the group with mild dysarthria. Second, the current study suggests the existence of a significant correlation between the maximal tongue and lip strength and the PCC and speech intelligibility within all subjects with dysarthria. These findings can serve as an effective foundation to diagnose dysarthria quickly and accurately. The results of this study also indicate that in addition to the maximal tongue strength, the maximal lip strength can prove to be an important index in predicting the speech intelligibility of dysarthric adults with cerebral palsy.

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References

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