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Commun Sci Disord. 2006;11(3): 99-112.
Clustering and Switching on Verbal Fluency in Vascular Dementia and Dementia of the Alzheimer's Type
Jaeseol Park` , Yeonwook Kang` , Eun Joo Chang` , Euna Oh` , Kyung Ho Yu` , and Byuug Chul Lee`
Copyright ©2006 The Korean Academy of Speech-Language Pathology and Audiology
박재설(Jaeseol Park)| 강연욱(Yeonwook Kang)| 장은주(Eun Joo Chang)| 오은아(Euna Oh)| 유경호(Kyung Ho Yu)| 이병철(Byuug Chul Lee)
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The present study was conducted to examine the deficits of clustering and switching processes on the semantic and phonemic fluencies in 57 vascular dementia(VD), 44 Dementia of the Alzheimer’s Type(DAT), and 66 normal elderly(NE). All the patients were in very mild to mild level of dementia (CDR≤1.0). The subjects were given the tests of phonemic(ㄱ, ㅇ, ㅅ) and semantic fluency(animals). The following 4 types of scores were obtained from each test: (a) total number of words generated, excluding errors; (b) mean clustering size; (c) number of switches; and (d) number of errors (repetitions and intrusion). The results found that both VD and DAT, even at the early stages of dementia, showed significantly lower performance on the verbal fluency test than the NE did. The types and timing of deficits in clustering and switching processed between two dementia groups. We discussed their implications on the differentiation between VD and DAT.
Keywords: 단어 유창성 | 혈관성 치매 | 알츠하이머형 치매 | 군집화 | 전환 | verbal fluency test | vascular dementia
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