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Discourse characteristics of persons with aphasia and right hemisphere damage:Analysis using the Japanese version of Main Concept Analysis Hitomi Yazu 1,2 , Hiroyo Yoshihata 2 , Kana Nara 3 , Akiko Ishiwata 4 , Kazumi Kimura 5 , Kimihiro Okubo 6 1Department of Oto-Rhino-Laryngology, Nippon Medical School Hospital 2Graduate School of Languages and Linguistics, Sophia University 3ULU Visiting Nursing Station Hodogaya 4Department of Neurology, Nippon Medical School Hospital 5Department of Neurological Science, Graduate School of Medicine, Nippon Medical School 6Department of Oto-Rhino-Laryngology, Graduate School of Medicine, Nippon Medical School Keyword: 談話障害 , 失語症 , 右半球損傷 , 日本語版MCA , discourse disorders , aphasia , right hemisphere damage , J-MCA pp.141-151
Published Date 2024/6/15
DOI https://doi.org/10.11477/mf.6001200474
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 In this study, we used the Japanese version of Main Concept Analysis for Oral Description (J-MCA) to characterize different discourses of participants with aphasia (PWA) and participants with right hemisphere damage (RHD). J-MCA measures the quality of discourse content using the accuracy and completeness of the Main Concept (MC). MCs are evaluated using four indices:Accurate and Complete (AC), Accurate but Incomplete (AI), Inaccurate (IN), and Absent (AB). As a result, PWA had lower number of AC than healthy participants (HP). In both groups, the number of IN was higher than HP, and the number of AC per minute was lower. PWA had a higher number of AI than RHD. However, there was no difference in the AB count between the three groups. These results indicate that it is not the number of MCs that distinguishes the discourse of HP from that of PWA and RHD, but the amount of incorrect information contained in the MCs. The comparison between PWA and RHD suggested that AI produced by PWA was often due to the lack of important information in nouns. We expect that J-MCA will be used in clinical practice as one of the indices to evaluate discourse.


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電子版ISSN 印刷版ISSN 1349-5828 日本言語聴覚士協会

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