Abstract
Abstract Polysomnograhic (PSG) studies in Alzheimer’s disease (AD) show REM sleep abnormalities, which may be indicative for the deterioration of cholinergic pathways and probably closely linked to declarative memory impairment. To clarify the specificity of the association between sleep and cognitive impairment in dementia, we compared AD patients with patients suffering from frontotemporal dementia (FTD) with regard to PSG and neuropsychological variables. 15 AD and 6 FTD patients underwent polysomonography and a neuropsychological battery (CERAD-NB). Group differences (age: AD > FTD; education level: AD
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