Dr. Gustavo Saposnik (IMAGE) St. Michael's Hospital Caption Prof. Dr. Gustavo Saposnik, a neurologist at St. Michael's Hospital, a scientist at the hospital's Li Ka Shing Knowledge Institute and lead author of the study. Credit Unity Health Toronto 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.