title: Frontal hypometabolism does not explain inhibitory dysfunction in Alzheimer disease.
abstract: A series of tasks assessing inhibitory processes was administered to patients with Alzheimer disease and control subjects. Two groups of patients with Alzheimer disease were examined: patients with hypometabolism restricted to the posterior (temporal and parietal) cerebral areas and patients with hypometabolism in both posterior and anterior (frontal) cerebral areas. The performances of the patients with Alzheimer disease were inferior to those of control subjects on all inhibitory tasks, but the two groups of patients obtained similar scores. These data indicate that frontal lobe hypometabolism is not necessary to produce inhibitory impairment in Alzheimer disease. Consequently, inhibitory dysfunction could be the consequence of a (partial) disconnection process between posterior and anterior cerebral areas.
authors.affiliation: Neuropsychology Unit, University of Liège, Belgium. f.collette@ulg.ac.be
authors.forename: Fabienne
authors.initials: F
authors.lastname: Collette
authors.forename: Martial
authors.initials: M
authors.lastname: Van der Linden
authors.forename: Gael
authors.initials: G
authors.lastname: Delrue
authors.forename: Eric
authors.initials: E
authors.lastname: Salmon
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000503:physiopathology*; D005260:Female; D005625:Frontal Lobe / Q000378:metabolism*; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D008875:Middle Aged; D013647:Task Performance and Analysis