Journal

The Japanese journal of neuropsychology

[Vol.28 No.4 contents]
Japanese/English

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ArticleTitle Dysgraphia in Alzheimer's disease: relation between each type of error in a dictation task and the scores of attention tasks
Language J
AuthorList Atsushi Sato1)2), Toru Imamura1)3), Yuri Kudo4), Takuya Sato2)
Affiliation 1)Division of Speech, Hearing and Cognitive Sciences, Graduate School of Health Sciences, Niigata University of Health and Welfare
2)Division of Speech Therapy, Department of Rehabilitation, Niigata Rehabilitation Hospital
3)Department of Neurology, Niigata Rehabilitation Hospital
4)Department of Rehabilitation Medicine, Rehabilitation Center Midori Hospital
Publication Japanese Journal of Neuropsychology: 28 (4), 266-273, 2012
Received Apr 4, 2011
Accepted Nov 10, 2011
Abstract Objective: To analyze the relation between the types of errors in a dictation task and the scores of attention tasks in patients with Alzheimer's disease (AD). Subjects: 91 AD patients whose educational attainment was 7 to 12 years and who scored 10 or more in the Mini-Mental State Examination. Methods: All subjects underwent digit span test (forward and backward), Alzheimer's Disease Assessment Scale (ADAS), and a dictation task of writing down a sentence. We explored factors which related to the presence/absence of each error type in the dictation task using a multiple logistic regression analysis. Results: After adjusting for the overall dementia severity, substitution of letters occurred more frequently in subjects with a worse score of backward digit span and with a worse score of Following Commands in the ADAS. Omission of letters occurred more frequently in subjects with a worse score of backward digit span. Conclusion: The results suggested that, in AD patients, the substitution and omission of letters in a dictation task were attributable to the disturbance of divided attention while the substituted letters occurred also due to decrease in language function. Each error type in a dictation task reflects a qualitatively different disturbance of cognitive function in AD patients and requires a further analysis in terms of attention disturbance.
Keywords Alzheimer's desease, dysgraphia, dictation, error type, attention disturbance

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