Article (Scientific journals)
Verbal learning in Alzheimer’s disease and mild cognitive impairment:fine-grained acquisition and short-delay consolidation performance and neural correlates
Genon, Sarah; Collette, Fabienne; Moulin, Chris et al.
2013In Neurobiology of Aging, 34, p. 361-373
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Keywords :
Alzheimer’s disease; Mild cognitive impairment; Verbal learning; Verbal acquisition; Short-delay consolidation; Brain imaging
Abstract :
[en] The aim of this study was to examine correlations between acquisition and short-delay consolidation and brain metabolism at rest measured by fluorodeoxyglucose positron emission tomography (FDG-PET) in 44 Alzheimer’s disease (AD) patients, 16 patients with mild cognitive impairment (MCI) who progressed to dementia (MCI-AD), 15 MCI patients who remained stable (MCI-S, 4–8 years of follow-up), and 20 healthy older participants. Acquisition and short-delay consolidation were calculated respectively as mean gained (MG) and lost (ML) access to items of the California Verbal Learning Task. MG performance suggests that acquisition is impaired in AD patients even at predementia stage (MCI-AD). ML performance suggests that short-delay consolidation is deficient only in confirmed AD patients. Variations in acquisition performance in control participants are related to metabolic activity in the anterior parietal cortex, an area supporting task-positive attentional processes. In contrast, the acquisition deficit is related to decreased activity in the lateral temporal cortex, an area supporting semantic processes, in patients at an early stage of AD and is related to metabolic activity in the hippocampus, an area supporting associative processes, in confirmed AD patients.
Research center :
GIGA CRC (Cyclotron Research Center) In vivo Imaging-Aging & Memory - ULiège
Disciplines :
Neurosciences & behavior
Author, co-author :
Genon, Sarah ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Collette, Fabienne  ;  Université de Liège - ULiège > Département de Psychologie : cognition et comportement > Neuropsychologie
Moulin, Chris;  University of Leeds, UK
LEKEU, Françoise ;  Centre Hospitalier Universitaire de Liège - CHU > Neurologie Sart Tilman
Bahri, Mohamed Ali  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Salmon, Eric  ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Bastin, Christine  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Language :
English
Title :
Verbal learning in Alzheimer’s disease and mild cognitive impairment:fine-grained acquisition and short-delay consolidation performance and neural correlates
Publication date :
2013
Journal title :
Neurobiology of Aging
ISSN :
0197-4580
eISSN :
1558-1497
Publisher :
Elsevier, New York, United States - New York
Volume :
34
Pages :
361-373
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 May 2012

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