Mikael Tiger (IMAGE) Karolinska Institutet Caption Mikael Tiger, researcher at the Department of Clinical Neuroscience, Karolinska Institutet, Sweden. Photo: Anna Magnusson Collsiöö Credit Anna Magnusson Collsiöö Usage Restrictions The photo may only be used in connection to reports about Dr Tiger's research. 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.