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알츠하이머성 치매의 단어 어휘성 및 규칙성에 따른 실독증
황자은(Ja Eun Hwang),김향희(Hyang Hee Kim),조성래(Sung Rae Cho),윤지혜(Ji Hye Yoon) 한국언어청각임상학회 2017 Communication Sciences and Disorders Vol.22 No.1
배경 및 목적: 알츠하이머성 치매(Alzheimer s Disease, AD)로 인한 한글 읽기장애가 흔히 관찰됨에도 불구하고 그에 대한 연구는 미비한 실정이다. 본 연구에서는 읽기 경로 특성과 관련하여 알츠하이머성 치매군의 단어 어휘성 및 규칙성에 따른 실독증 특성을 밝히고자 하였다. 방법: 전반적 퇴화척도 GDS 3-6에 해당하는 치매군 20명과 정상군 20명을 대상으로 세 가지 단어 유형(규칙단어, 불규칙단어, 비단어)을 소리 내어 읽도록 하였다. 결과: 치매군은 정상군에 비하여 규칙단어, 불규칙단어, 비단어 읽기 모두에서 오류 빈도가 유의하게 높았고 치매군은 어휘성 효과(lexicality effect), 규칙성 효과(regularity effect)를 보였다. 또한 불규칙단어의 음운변동 적용과정에서 읽기 오류 분석 결과, 치매군은 시각적 오류(visual error), 규칙화(regularization), 음운변동 잘못 적용(misapplication of phonological rules) 순으로 오류 빈도가 높았다. 논의 및 결론: 한글을 사용하는 알츠하이머성 치매 환자는 단어 유형에 따른 오류 양상이 다양하게 나타나며, 본 연구는 그것을 밝힌 최초 연구이므로 가치가 있다고 생각된다. Objectives: Despite a great deal of observation on subsequent alexia for Hangeul due to Alzheimer s disease (AD), there is a paucity of research on alexia in Korean AD patients. The purpose of this study is to identify characteristics of alexia of AD according to word lexicality and regularity. Methods: AD patients under GDS 3-6 on the Global Deterioration Scale and NE (normal elderly) groups of 20, were to read aloud three word types (regular words, irregular words, nonwords). Results: The findings revealed that the AD group had significantly higher error frequency when reading regular and irregular words and nonwords compared with the NE group. In addition, there were lexicality and regularity effects in the AD group. From the error analyses of the AD group reading irregular words, visual error was the most frequent, followed by regularization and misapplication of phonological rules. Conclusion: Unsurprisingly, AD patients using Hangeul manifested diverse word classification errors. This research is noteworthy in that it is the first study on the AD subject group reading Hangeul.
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치조 마찰음 왜곡 오류 유무에 따른 아동 발화 적률분석 비교
한윤주,김도형,황자은,장대현,김재 한국음성학회 2024 말소리와 음성과학 Vol.16 No.1
This study investigated acoustic features in spectral moment analysis, comparing accurate articulations with distortions of alveolar fricatives such as dentalization, palatalization, and lateralization. A retrospective analysis was conducted on speech samples from 61 children (mean age: 5.6±1.5 years, 19 females, 42 males) using the Assessment of Phonology & Articulation for Children (APAC) and Urimal-test of Articulation and Phonology I (U-TAP I). Spectral moment analysis was applied to 169 speech samples. The results revealed that the center of gravity of accurate articulations was higher than that of palatalization, while palatalization was lower than dentalization. The variance of dentalization was higher than that of both accurate articulations and palatalization. The skewness of dentalization was higher than that of accurate articulations, and the skewness of palatalization was higher than that of accurate articulations. The kurtosis of palatalization was higher than that of both accurate articulations and dentalization. No significant differences were observed for the position of fricatives (initial, medial) and tense type (plain, tense) across all variables of spectral moment analysis for each distortion type. This study confirmed distinct patterns in center of gravity, variance, skewness, and kurtosis depending on the type of alveolar fricative distortion. The objective values provided in this study will serve as foundational data for diagnosing alveolar fricative distortions in children with speech sound disorders.
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