João Barbosa Breda

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1. The influence of (+)-amphetamine, given 1 min after each training session, on the performance of 124 rats in a Lashley III maze was measured every 48 hr.2. The first three injections of the drug significantly improved the learning ability of naive rats.3. With prolonged treatment, (+)-amphetamine strongly impaired the maze performance of these rats.4.(More)
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