Dr. Penny Hallett, McLean Hospital (IMAGE) McLean Hospital Caption Dr. Penny Hallett, Co-Director of the Neuroregeneration Institute at McLean Hospital, and Assistant Professor Harvard Medical School. Credit McLean Hospital 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.