The Medial Orbitofrontal Cortex (IMAGE) University of Warwick Caption The Medial Orbitofrontal Cortex - Dorsal Periaqueductal Gray top-down regulations are linked to impulsive and compulsive drinking. Credit University of Warwick Usage Restrictions Only to be used in conjunction with this story 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.