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Primate Brain Scans, CocaineThese brain scans were made at Brookhaven National Laboratory's Positron Emission Tomography facility, as part of the study of GVG. They are an average of the brain scans from six different baboons. They show the concentration of available dopamine receptors on a scale that goes from blue (low) to red (high). More dopamine receptors available means less dopamine in the brain. So, it is clear that cocaine causes dopamine levels to rise
sharply in certain areas of the brain, while GVG mostly prevents
this effect if given before a dose of cocaine. This blocking of
cocaine's usual effect is what makes GVG so promising for fighting
addiction.
Last Modified: January 31, 2008 |