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| Description: PET studies show that the brains of cocaine addicts have fewer receptors for dopamine, a neurotransmitter involved in pleasurable sensations. (The more yellow and red in the brain image, the more receptors.) The brains of people addicted to methamphetamine, alcohol, and even food show a similar dopamine deficiency. Picture Stats: Views: 158 Filesize: 358.42kB Height: 480 Width: 584 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39212 |