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. 2014 May;349(2):192–198. doi: 10.1124/jpet.114.212993

Fig. 4.

Fig. 4.

LgA and IntA cocaine self-administration have no effect on dopamine release in the presence of amphetamine or MPH. There were no differences in MPH- or amphetamine-induced dopamine elevations between control, IntA, LgA, or ShA cocaine self-administration groups. (A) Normalized stimulated dopamine release measured across a dose-response curve for MPH. (B) Normalized stimulated dopamine release measured across a dose-response curve for amphetamine. AMPH, amphetamine; DA, dopamine.