Michael Grandner, PhD (IMAGE) University of Arizona Health Sciences Caption Michael Grandner, PhD, is an associate professor of psychiatry, director of the Behavioral Sleep Medicine Clinic and a BIO5 Institute member. Credit University of Arizona College of Medicine – Tucson Usage Restrictions For editorial use only related to the news release "The mind after midnight: Study shows disrupted sleep increases risk for suicide and homicide" 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.