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Short-term effects of acetylcholinesterase inhibitor treatment on EEG and memory performance in Alzheimer patients: an open, controlled trial.

Research paper by S S Brassen, G G Adler

Indexed on: 10 Dec '03Published on: 10 Dec '03Published in: Pharmacopsychiatry



Abstract

Acetylcholinesterase inhibitor treatment enhances cholinergic neurotransmission and may thus partially reverse EEG slowing and memory impairment in Alzheimer patients within short time.We studied the short-term effects of treatment with either rivastigmine or donepezil on EEG and memory performance in a group of 35 Alzheimer patients in an open, controlled design.Under a 1- or 2-week acetylcholinesterase inhibitor treatment, a decrease of global theta power and an improvement in the ADAS memory score were observed. However, compared to the control condition, only the theta power decrease remained significant and can be definitely considered a medication effect.EEG spectral analysis could be shown to rapidly reflect the cerebral cholinergic action of short-term acetylcholinesterase inhibitor treatment. Whether this action is related to the therapeutic efficacy of this type of drug must be determined in further longitudinal studies.