Insulin-Dopamin Interaction (IMAGE) Deutsches Zentrum fuer Diabetesforschung DZD Caption Intranasal insulin induces an increase in the [11C] raclopride binding potential in the striatum, which indicates a decrease in the synaptic dopamine level. © IDM Credit IDM Usage Restrictions n License Original content 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.