Sleep researcher (IMAGE) University of Massachusetts Amherst Caption Rebecca Spencer, a professor of psychological and brain sciences at UMass Amherst, is well-known for her groundbreaking research into napping. Credit UMass Amherst Usage Restrictions None License Original 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.