Are Alzheimer's disease patients able to learn visual prototypes?

Recently, controversial results emerged regarding visual prototype learning in Alzheimer's disease (AD). The aim of this study was to elucidate this issue in a larger population of AD patients. The AD patients ( N=72) and age-matched healthy control subjects ( N=25) learned to recognize and to...

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Bibliographic Details
Published in:Neuropsychologia 2001, Vol.39 (11), p.1218-1223
Main Authors: Kéri, Szabolcs, Kálmán, János, Kelemen, Oguz, Benedek, György, Janka, Zoltán
Format: Article
Language:English
Subjects:
Adult and adolescent clinical studies
Aged
Alzheimer Disease - physiopathology
Alzheimer's disease
Biological and medical sciences
Brain - physiopathology
Category learning
Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases
Explicit memory
Functional Laterality - physiology
Humans
Implicit memory
Learning - physiology
Medical sciences
Memory Disorders - diagnosis
Memory Disorders - physiopathology
Neurology
Neuropsychological Tests
Organic mental disorders. Neuropsychology
Perceptual Disorders - diagnosis
Perceptual Disorders - physiopathology
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Recognition
Recognition (Psychology)
Sensory neocortex
Visual Perception - physiology
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Summary:Recently, controversial results emerged regarding visual prototype learning in Alzheimer's disease (AD). The aim of this study was to elucidate this issue in a larger population of AD patients. The AD patients ( N=72) and age-matched healthy control subjects ( N=25) learned to recognize and to categorize visual dot patterns. In comparison with the control subjects, the AD patients as a group showed dysfunctions in the recognition task, whereas categorization was relatively spared in their case. Recognition was impaired in patients with mild AD (Mini-Mental score: 18–23) and moderate AD (Mini-Mental score
ISSN:0028-3932
1873-3514
DOI:10.1016/S0028-3932(01)00046-X