The Brain's Reward System (image) University of Basel Share Print E-Mail Caption The MRI image clearly shows how the brain's reward, or limbic, system behaves differently when administered a placebo (top) or one of two types of sugar, glucose (center) and fructose (bottom). Credit (Image: University of Basel, Department of Biomedicine) Usage Restrictions Give adequate attribution to the original author. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.