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Dopaminergic inputs from the ventral tegmental area and substantia nigra are involved in numerous emotional and behavioral functions mediated by the amygdala. Previous studies have shown that some dopaminergic axons selectively innervate subpopulations of neurons in the rat basolateral amygdala by forming dense pericellular arrays (baskets) that envelope the perikarya of these neurons. Because of...
Male rat copulatory ability decreases dramatically following castration. This may be due in part to the impairment of medial preoptic area (MPOA) dopamine (DA) release. Previous studies showed that extracellular DA levels in the MPOA of castrates were lower than in intact males, both during basal conditions and in the presence of a receptive female. However, tissue levels of DA in the MPOA were higher...
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