Jan Wessel (IMAGE) University of Iowa Caption Jan Wessel, at the University of Iowa, led a team that identified a brain region involved in how attention or thought is diverted. In addition to its biological significance, the finding could help people with Parkinson’s disease who struggle with impulsive thoughts or erratic attention. Credit University of Iowa Usage Restrictions There are no restrictions on use. 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.