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Cholinergic Learning Deficits in the Marmoset Produced by Scopolamine and ICV Hemicholinium

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Specialty Pharmacology
Date 1984 Jan 1
PMID 6436862
Citations 11
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Abstract

Common marmosets (Callithrix jacchus) were trained to perform daily position discrimination learning tasks in a Wisconsin General Test Apparatus. Acetylcholine receptor blockade with scopolamine was found to impair position learning. Testing on the day after scopolamine treatment suggested that a task learnt under scopolamine was not encoded into long term memory. Acetylcholine depletion achieved by the intraventricular injection of hemicholinium 4 h before testing resulted in a profound impairment of position discrimination learning. It is suggested that central acetylcholine depletion in primates may provide a useful model of senile dementia.

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