Researchers (IMAGE) Karolinska Institutet Caption Martin Ugander, Michael Broomé and Elira Maksuti, are co-authors of the article in Scientific Reports. Credit Photo: Mattias Mårtensson Usage Restrictions The image may only be used in connection with reports about this study. 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.