Solving the Riddle of Concussions (IMAGE) Norwegian University of Science and Technology Caption Chief radiologist Bjarte Snekvik from St. Olavs Hospital in Trondheim, Norway and Alexander Olsen, an associate professor at the Norwegian University of Science and Technology's Department of Psychology, and aneuropsychologist in the Physical Medicine and Rehabilitation Clinic at St. Olavs Hospital look at a brain scan. A new study shows that some people with concussions are subject to long-term problems that can be especially detrimental to sleep. Credit Geir Mogen/NTNU Usage Restrictions Only in association with articles about this research and with proper 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.