Increased food intake after opioid microinjections into nucleus accumbens and ventral tegmental area of rat.
The nucleus accumbens (ACC) and ventral tegmental area (VTA), two areas believed to subserve reinforcement and increases in locomotor activity produced by opioid microinjections, were examined for their involvement in opioid-produced changes in ingestive behavior. Opioids were infused bilaterally, and food and water intakes were measured for 1 h thereafter. Different morphine doses were administered and, with placements in globus pallidus and lateral ventricles as controls for diffusion, it w...Expand abstract
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