The ability of four central cholinomimetics to reverse a scopolamine-induced spatial memory impairment or to improve visual recognition memory in primates was examined. Physostigmine (0.04-0.08 mg/kg IM) fully reversed the effects of scopolamine (0.03 mg/kg). Coadministration of pilocarpine (3.0-5.0 mg/kg) caused partial reversal of the scopolamine impairment after intermediate or long retention intervals (10 or 20 s). Treatment with arecoline (0.1-1.8 mg/kg) or nicotine (1.0-2.0 mg/kg) gener...Expand abstract
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Comparison of the effects of four cholinomimetic agents on cognition in primates following disruption by scopolamine or by lists of objects.
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