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Journal of the Korean Academy of Rehabilitation Medicine 2000;24(1):21-27.
A Study on Clinical and Phonological Characteristics of Patients with Specific Language Impairment.
Kim, Yun Hee , Park, Se Hoon , Shin, Yong Il , Kim, Chan Yang , Kim, Hyun Gi , Kim, Jung Soo
1Department of Rehabilitation Medicine, Medical School, Chonbuk National University.
2Faculty of European Language and Literature, College of Humanities, Chonbuk National University.
3Speech Therapy Section, Center for Rehabilitation Medicine, Chonbuk National University Hospital.
4Department of Pediatrics, Medical School, Chonbuk National University.
특수 언어발달 장애 환아의 임상 및 음향음성학적 특성연구
김연희, 박세훈, 신용일, 김찬양1, 김현기2, 김정수3
전북대학교 의과대학 재활의학교실, 1전북대학교병원 재활의학과 언어치료실, 2인문과학대학 유럽어문학부, 3전북대학교 의과대학 소아과학교실

The purpose of this study is to determine clinical and phonological characteristics of the patients with specific language impairment (SLI).

Subjects were 24 SLI patients without known mental retardation, cerebral palsy, epilepsy, hearing loss or structural brain lesion and 23 normal children. Developmental history, oropharyngeal abnormality, and brainstem auditory evoked potentials were obtained in SLI patients. Receptive language age and quotient were assessed by Peabody picture vocabulary test. Phonetic characteristics of subjects were analysed using Visi-Pitch and computerized speech laboratory.

In perceptual evaluation, 32.3% of SLI patients showed incomplete articulation pattern. The patterns of incomplete articulation were substitution, distortion, nasalization, and addition. The receptive language of SLI patients (0.89⁑0.28) was significantly lower than control group (1.16⁑0.18). In Visi-Pitch analysis, diadochokinetic rate and maximal phonation time were decreased in SLI patients. The total duration of three syllables in SLI patients were significantly prolonged, especially for bilabial heavily asperated and glottalized consonants and alveolar and velar slightly asperated, heavily asperated, and glottalized consonants.

The patients with SLI showed characteristic defect in articulation as well as expressive and receptive language delayment. This articulatory defect may be resulted from disturbance of central programming and coordination of articulation. The objective and quantitative analysis of Phonological characteristics using computerized speech system in SLI patients can contribute to diagnose and evaluate the treatment outcome for the patients.

Key Words: Specific language impairment, Phonological characteristics


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