Journal
JOURNAL OF COMPARATIVE NEUROLOGY
Volume 493, Issue 1, Pages 115-121Publisher
WILEY
DOI: 10.1002/cne.20689
Keywords
reward; reinforcement; motivation; medial forebrain bundle; dopamine
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Electrical stimulation of the medial forebrain bundle can reward arbitrary acts or motivate biologically primitive, species-typical behaviors like feeding or copulation. The subsystems involved in these behaviors are only partially characterized, but they appear to transsynaptically activate the mesocorticolimbic dopamine system. Basal function of the dopamine system is essential for arousal and motor function; phasic activation of this system is rewarding and can potentiate the effectiveness of reward-predictors that guide learned behaviors. This system is phasically activated by most drugs of abuse and such activation contributes to the habit-forming actions of these drugs.
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