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Relationship of frontal lobe dysfunction and aberrant motor behaviors in patients with Alzheimer's disease

Background: In order to address the neuropsychological pathogenesis of aberrant motor behaviors in Alzheimer's disease (AD), we used a cross-sectional study design to investigate the association between frontal lobe function, including executive function, and activity disturbances (wandering, p...

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Published in:International psychogeriatrics 2010-05, Vol.22 (3), p.463-469
Main Authors: Nagata, Tomoyuki, Shinagawa, Shunichiro, Ochiai, Yusuke, Kada, Hirohide, Kasahara, Hiroo, Nukariya, Kazutaka, Nakayama, Kazuhiko
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creator Nagata, Tomoyuki
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description Background: In order to address the neuropsychological pathogenesis of aberrant motor behaviors in Alzheimer's disease (AD), we used a cross-sectional study design to investigate the association between frontal lobe function, including executive function, and activity disturbances (wandering, purposeless activities and inappropriate activities). Methods: Among 75 consecutive outpatients with AD, 50 subjects with a Clinical Dementia Rating (CDR) score of 1 or 2 were selected and divided into two groups based on data obtained from interviews with their caregivers: an aberrant motor behaviors (AMB) group (n = 22), and a non-aberrant motor behaviors (NAMB) group (n = 28). Aberrant motor behavior was defined according to whether the “activity disturbance” score (ranging from 0 to 9) of the Behavioral Pathology in Alzheimer Disease (Behave-AD) scale was 0 or ≥1. The total and subtest scores of the Frontal Assessment Battery (FAB) were then compared between the two groups. Results: Significant differences were found between the FAB total (P < 0.05) and the subtest scores (lexical fluency, conflicting instructions; P < 0.05) in the two groups. The FAB score was significantly associated with the activity disturbance score (r = −0.49; P
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A stepwise multiple regression analysis showed that only the FAB score significantly influenced the activity disturbance score (P &lt; 0.001). Conclusions: This finding suggested that in addition to episodic memory disturbance, frontal lobe dysfunctions might lead patients with AD to develop aberrant motor behavior.</description><identifier>ISSN: 1041-6102</identifier><identifier>EISSN: 1741-203X</identifier><identifier>DOI: 10.1017/S1041610209991323</identifier><identifier>PMID: 20003629</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Adult and adolescent clinical studies ; Aged ; Aged, 80 and over ; Alzheimer Disease - diagnosis ; Alzheimer Disease - physiopathology ; Alzheimer Disease - psychology ; Alzheimer's disease ; Behavior disorders ; Biological and medical sciences ; Brain ; Cognition &amp; reasoning ; Cross-Sectional Studies ; Degenerative and inherited degenerative diseases of the nervous system. 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Methods: Among 75 consecutive outpatients with AD, 50 subjects with a Clinical Dementia Rating (CDR) score of 1 or 2 were selected and divided into two groups based on data obtained from interviews with their caregivers: an aberrant motor behaviors (AMB) group (n = 22), and a non-aberrant motor behaviors (NAMB) group (n = 28). Aberrant motor behavior was defined according to whether the “activity disturbance” score (ranging from 0 to 9) of the Behavioral Pathology in Alzheimer Disease (Behave-AD) scale was 0 or ≥1. The total and subtest scores of the Frontal Assessment Battery (FAB) were then compared between the two groups. Results: Significant differences were found between the FAB total (P &lt; 0.05) and the subtest scores (lexical fluency, conflicting instructions; P &lt; 0.05) in the two groups. The FAB score was significantly associated with the activity disturbance score (r = −0.49; P&lt;0.001). A stepwise multiple regression analysis showed that only the FAB score significantly influenced the activity disturbance score (P &lt; 0.001). Conclusions: This finding suggested that in addition to episodic memory disturbance, frontal lobe dysfunctions might lead patients with AD to develop aberrant motor behavior.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><pmid>20003629</pmid><doi>10.1017/S1041610209991323</doi><tpages>7</tpages></addata></record>
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subjects Adult and adolescent clinical studies
Aged
Aged, 80 and over
Alzheimer Disease - diagnosis
Alzheimer Disease - physiopathology
Alzheimer Disease - psychology
Alzheimer's disease
Behavior disorders
Biological and medical sciences
Brain
Cognition & reasoning
Cross-Sectional Studies
Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases
Executive Function
Female
Frontal Lobe - physiopathology
Geriatric psychology
Geriatrics
Humans
Male
Medical sciences
Motor Activity
Neurology
Neuropsychology
Older people
Organic mental disorders. Neuropsychology
Outpatients - psychology
Psychiatric Status Rating Scales
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Regression Analysis
Wandering Behavior - psychology
title Relationship of frontal lobe dysfunction and aberrant motor behaviors in patients with Alzheimer's disease
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