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Evaluation of Semantic Dementia Patient Kenjiro Komori 1 1Room of Psychology, Juzen-Yurinoki Hospital Keyword: 意味記憶障害 , 語義失語 , 相貌失認 , 行動変化 , semantic memory impairment , gogi aphasia , prosopagnosia , behavioral changes pp.593-610
Published Date 2020/6/1
DOI https://doi.org/10.11477/mf.1416201570
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Abstract

Semantic dementia (SD) is a clinical syndrome characterized by selective and progressive semantic memory impairment due to frontotemporal lobar degeneration (FTLD). Semantic memory disorders appear in every cognitive fields, be it language or recognition of familiar people and objects. Left-right asymmetry produces a distinctive clinical symptom of anterior temporal lobe atrophy. Progressive gogi (word-meaning) aphasia, i.e., word comprehension deficits with severe anomia, is prominent in left-dominant patients, whereas progressive prosopagnosia, i.e., difficulty recognizing familiar faces, is prominent in right-dominant patients. Loss of semantic memory of objects is observed in advanced stages of the disease. Behavioral symptoms are less prominent in the early stages; however, behavioral changes in patients with gogi aphasia are observed even in their initial visits. In addition to neuroimaging and neuropsychological evaluation of semantic memory, it will be useful if clinicians pay attention to behavioral changes of patients with gogi aphasia.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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