Article (Scientific journals)
A multidimensional approach to impulsivity changes in mild Alzheimer's disease and control participants: Cognitive correlates
Rochat, Lucien; Billieux, Joël; Juillerat Van der Linden, Anne-Claude et al.
2013In Cortex: A Journal Devoted to the Study of the Nervous System and Behavior, 49 (1), p. 90-100
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Keywords :
Alzheimer; Executive functions; Impulsivity; Inhibition; UPPS Impulsive Behavior scale; Alzheimer disease
Abstract :
[en] Introduction: Impulsive behaviors are frequently described in brain-damaged patients, including patients with Alzheimer's disease (AD). However, few studies have examined impulsivity changes and associated cognitive impairments in AD and healthy controls. Consequently, the first aim of this study was to compare patients with mild AD and matched controls on four dimensions of impulsivity (urgency, lack of premeditation, lack of perseverance, and sensation seeking) recently highlighted in the literature. The second objective was to examine the association between impulsivity changes and cognitive performances on executive/attentional tasks in mild AD and healthy controls. Methods: Thirty patients with mild AD and 30 matched controls were administered a battery of tests that assessed executive and attention processes. In addition, informants of each patient and control completed a short questionnaire designed to assess the changes on the four dimensions of impulsivity (Rochat et al., 2008). Results: Patients with mild AD had higher scores than controls on lack of premeditation and lack of perseverance dimensions of impulsivity, whereas the two groups did not differ on urgency and sensation seeking. Furthermore, patients showed significant decreased performances on measures of inhibition of prepotent responses, set-shifting, and working memory, as well as higher variability of reaction times (RTs) than matched controls. Regression analyses computed on the whole sample emphasized that difficulties in inhibition of prepotent responses significantly predicted higher lack of premeditation, and larger variability of RTs and set-shifting difficulties significantly predicted higher lack of perseverance, even when global cognitive functioning, general processing speed, working memory, and age were controlled for. Urgency and sensation seeking were not associated with any variables. Conclusions: These results provide valuable insight into the nature of brain systems and cognitive processes underlying impulsive behaviors. In addition, they open up interesting prospects for better comprehension of behavioral and psychological symptoms of AD. © 2011 Elsevier Ltd.
Disciplines :
Neurosciences & behavior
Author, co-author :
Rochat, Lucien;  Cognitive Psychopathology and Neuropsychology Unit, University of Geneva, Geneva, Switzerland, Swiss Centre for Affective Sciences, University of Geneva, Geneva, Switzerland
Billieux, Joël;  Cognitive Psychopathology and Neuropsychology Unit, University of Geneva, Geneva, Switzerland, Swiss Centre for Affective Sciences, University of Geneva, Geneva, Switzerland
Juillerat Van der Linden, Anne-Claude;  Department of Rehabilitation and Geriatrics, Geneva University Hospital, Switzerland
Annoni, Jean-Marie;  Neuropsychology Unit, Geneva University Hospital, Geneva, Switzerland, Neurology Unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland
Zekry, Dina;  Department of Rehabilitation and Geriatrics, Geneva University Hospital, Switzerland
Gold, Gabriel;  Department of Rehabilitation and Geriatrics, Geneva University Hospital, Switzerland
Van der Linden, Martial ;  Université de Liège - ULiège > Département de Psychologie > Département de Psychologie
Language :
English
Title :
A multidimensional approach to impulsivity changes in mild Alzheimer's disease and control participants: Cognitive correlates
Publication date :
2013
Journal title :
Cortex: A Journal Devoted to the Study of the Nervous System and Behavior
ISSN :
0010-9452
eISSN :
1973-8102
Publisher :
Masson SpA
Volume :
49
Issue :
1
Pages :
90-100
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 January 2020

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