Ventral Striatum (IMAGE) Duke University Caption Higher activity in the ventral striatum, the brain's reward center, may buffer some individuals against the negative mental health effects of poor sleep. Credit Annchen R. Knodt, Duke University Usage Restrictions with credit License Licensed 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.