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The more gray matter you have in the decision-making, thought-processing part of your brain, the better your ability to evaluate rewards and consequences. That may seem like an obvious conclusion, but a new study conducted at the U.S. Department of Energy’s Brookhaven National Laboratory is the first to show this link between structure and function in healthy people — and the impairment of both structure and function in people addicted to cocaine. The study appears in the Journal of Cognitive Neuroscience.
