Zacks (IMAGE) Washington University in St. Louis Caption Jeffrey Zacks, professor and associate chair of the Department of Psychological & Brain Sciences in Arts & Sciences and professor of radiology in the School of Medicine Credit Washington University in St. Louis Usage Restrictions Use allowed with proper attribution 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.