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자료유형
학술저널
저자정보
저널정보
한국청각언어재활학회 Audiology and Speech Research Audiology and Speech Research 제13권 제4호
발행연도
2017.1
수록면
335 - 344 (10page)

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Purpose: The present study compared the Korean consonant discrimination ability and voice onset time (VOT) between children with cochlear implants (CI) and children with normal hearing to investigate the characteristics of speech in children with CI. Methods: Twenty children with CI and twenty children with normal hearing participated in the present study. Of twenty children with CI, ten subjects had the CI surgery before three years old and the other ten subjects had after three years old. One-syllable stimuli (consonant-vowel) and twosyllable stimuli (vowel-consonant -vowel) were used to test the consonant discrimination and VOT, respectively. The consonant discrimination test was analyzed by manner of articulation (stop, fricative, affricate), place of articulation (bilabial, alveolar, palatal, velar), and voicing (lax, tense, aspirated), and VOT was analyzed by voicing. Results: For consonant discrimination, children with normal hearing showed significantly better recognition than children with CI in all the consonants. For the manner of articulation, the differences were significantly highest discrimination in affricates and lowest in stops. For the place of articulation, the differences were significantly highest in palatals and lowest in bilabials. However, there was no difference based on voicing between groups. For consonant discrimination between children with CI implantation before 3-years old and children with CI implantation after 3-years old, there were significant differences in the manner and the place of articulation whereas no difference was found in VOT. No relationship was found between the wearing periods of CI whereas age at implantation was highly correlated with consonant discrimination. For VOT, there were no significant differences in all stop sounds but the lowest discrimination was observed in stops. Conclusion: The characteristics of speech in children with CI were apparent in the manner and the place of articulation but not in voicing. This was highly associated with ages of CI.

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