(University of Pennsylvania School of Medicine) Researchers found that rodents that had been exposed to stress had a weakened alcohol-induced dopamine response and voluntarily drank more alcohol compared to controls. The blunted dopamine signaling to ethanol arose due to changes in the circuitry in the ventral tegmental area, the heart of the brain's reward system.
from EurekAlert! - Social and Behavioral Science http://ift.tt/2eHzqrv
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