A comparison of the motor-activating eff
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Carol G. McNamara; Emily S. Davidson; Susan Schenk
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Article
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1993
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Elsevier Science
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English
β 365 KB
dependently increased horizontal activity. The amphetamine-induced increase in activity was progressively augmented with repeated exposures over 7 days. In contrast, methylphenidate (20.0 mg/kg)-induced increases in activity became smaller with repeated exposures. Subthreshold doses of methylphenida