The effects of scopolamine, diazepam, and lorazepam on working memory in pigeons: an analysis of reinforcement procedures and sample problem type.

Abstract

Two groups of pigeons were trained on a delayed-matching-to-sample (DMTS) task with both identity and symbolic problems, that had either a) specific outcomes correlated (differential group) or b) outcomes uncorrelated (nondifferential group), for each correct sample-choice sequence. After reaching a criterion of 90% correct at the 0 s delay, subjects were… (More)

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