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Random number generation in dementia of the Alzheimer type: a test of frontal executive functions

Brugger, Peter and Monsch, Andreas U. and Salmon, David P. and Butters, N.. (1996) Random number generation in dementia of the Alzheimer type: a test of frontal executive functions. Neuropsychologia, 34 (2). pp. 97-103.

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Official URL: https://edoc.unibas.ch/79866/

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Abstract

The quality of attempts at generating a random sequence of the numbers 1-6 was studied in 30 patients with dementia of the Alzheimer type (DAT) and 30 elderly normal control (NC) subjects. Three main findings emerged: (1) DAT patients' subjective random sequences were more streotyped (contained fewer digit combinations) than those of NC subjects. (2) This difference in response stereotypy was due to patients' enhanced tendency to arrange consecutive numbers in an ascending series ('counting bias'). (3) In the patient group, degree of sequential nonrandomness was positively correlated with overall severity of dementia and with the extent to which performance on neuropsychological tests specifically assessing executive functions (fluency, naming, error monitoring) was impaired. These results illustrate a loss of behavioral complexity in the course of dementia and are interpreted as reflecting a frontal dysexecutive syndrome in DAT. What do you want to do ? New mail Copy
Faculties and Departments:03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Geriatrie > Geriatrie (Kressig)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Geriatrie > Geriatrie (Kressig)
07 Faculty of Psychology > Departement Psychologie
07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Klinische Psychologie und Neurowissenschaften > Molecular Psychology (Papassotiropoulos)
UniBasel Contributors:Monsch, Andreas U. U
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0028-3932
e-ISSN:1873-3514
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:21 Dec 2020 09:52
Deposited On:21 Dec 2020 09:52

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