Article (Scientific journals)
Comparison of inhibitory functioning in mild Alzheimer's disease and frontotemporal dementia
Collette, Fabienne; Amieva, Hélène; Adam, Stéphane et al.
2007In Cortex: A Journal Devoted to the Study of the Nervous System and Behavior, 43 (7), p. 866-874
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Keywords :
inhibition; frontotemporal dementia; Alzheimer's disease; executive functions
Abstract :
[en] Executive dysfunction is frequently reported in Alzheimer's disease (AD) and the frontal variant of frontotemporal dementia (FTD). More specifically, inhibitory dysfunction is observed early in AD and inhibitory deficits are also prominent in patients with FTD. However, few studies have simultaneously explored and compared inhibitory abilities in both degenerative diseases. Consequently, the aim of this study was to compare verbal and motor inhibitory processes in the initial stages of AD and the frontal variant of FTD. Stroop and Go/No-go tasks were administered. The results demonstrate that, on the Go/No-go task, AD and FTD patients do not produce more errors than control subjects. However, both groups are impaired on the Stroop task (mainly with regard to the error score) but do not differ from each other. These results indicate that AD and FTD patients do not present a general impairment of their inhibitory abilities. Moreover, these two kinds of dementia present similar quantitative and qualitative inhibitory impairments on the two tasks, although their patterns of structural and functional cerebral impairments are known to be different. The presence of similar inhibitory deficits despite very different patterns of brain damage is in agreement with the hypothesis that inhibitory dysfunction in the two groups of patients depends on a disconnection process between anterior and posterior cerebral areas, rather than on the presence of focal metabolism decreases in different regions.
Disciplines :
Neurosciences & behavior
Author, co-author :
Collette, Fabienne  ;  Université de Liège - ULiège > Département des sciences cognitives > Neuropsychologie
Amieva, Hélène;  Université V. Segalen, Bordeaux > Inserm U593
Adam, Stéphane  ;  Université de Liège - ULiège > Département des sciences cognitives > Département des sciences cognitives
Hogge, Michaël;  Université de Liège - ULiège > Département des Sciences Cognitives > Neuropsychologie
Van der Linden, Martial ;  Université de Liège - ULiège > Département des sciences cognitives > Psychopathologie cognitive
Fabrigoule, Colette;  Université V. Segalen, Bordeaux > Insem U593
Salmon, Eric  ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Language :
English
Title :
Comparison of inhibitory functioning in mild Alzheimer's disease and frontotemporal dementia
Publication date :
October 2007
Journal title :
Cortex: A Journal Devoted to the Study of the Nervous System and Behavior
ISSN :
0010-9452
eISSN :
1973-8102
Publisher :
Elsevier Masson, Milano, Italy
Volume :
43
Issue :
7
Pages :
866-874
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Site du journal: http://www.elsevier.com/wps/find/journaldescription.cws_home/714334/description#description
Available on ORBi :
since 10 February 2009

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