Adrian Morrison is Professor Emeritus of Behavioral Neuroscience at the University of Pennsylvania School of Veterinary Medicine. His research focuses on the neural control of sleep and wakefulness, with practical applications investigating REM sleep and sleep disorders. He has written extensively in the scientific publications of his specialty, such as the journals Sleep, Biological Psychiatry, and Behavioral Neuroscience. He is well-known as a defender of the necessity of using animals in humane biomedical research and has written numerous articles and opinion pieces on the topic of animal welfare. For three years he served as Director of the Program for Animal Research Issues, National Institute of Mental Health.