Section of a Mouse Brain (image) Université de Genève Share Print E-Mail Caption Section of a mouse brain showing in red the circuit that reinforces the behaviour, in green the circuit that reinforces the decision to continue. If the green projection is very active, the mice self-stimulate their red projection despite negative consequences. They become compulsive. Credit © UNIGE Usage Restrictions None 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.