Cue-evoked dopamine release in the nucleus accumbens shell tracks reinforcer magnitude during intracranial self-stimulation

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The mesolimbic dopamine system is critically involved in modulating reward-seeking behavior and is transiently activated upon presentation of reward-predictive cues. It has previously been shown, using fast-scan cyclic voltammetry in behaving rats, that cues predicting a variety of reinforcers including food/water, cocaine or intracranial self-stimulation (ICSS) elicit time-locked transient fluctuations in dopamine concentration in the nucleus accumbens (NAc) shell. These dopamine transients have been found to correlate with reward-related learning and are believed to promote...
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