Dr. Wagatsuma, lead author of the study (IMAGE) Toho University Caption Dr. Nobuhiko Wagatsuma, Lecturer at Toho University, Japan. Credit Nobuhiko Wagatsuma Usage Restrictions None 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.