Dr Allan H. Ropper is Professor of Neurology at Harvard Medical School and Raymond D. Adams Master Clinician of the Department of Neurology at Brigham and Women's Hospital. He is also a deputy editor of the New England Journal of Medicine and a fellow of the American Academy of Neurology, Royal College of Physicians, and the American College of Physicians. Dr Ropper is an author of the most widely consulted textbook of neurology, Principles of Neurology, currently in its eleventh edition, and co-author with B.D. Burrell of Reaching Down the Rabbit Hole.

B.D. Burrell is a member of the mathematics faculty at the University of Massachusetts Amherst. A teacher and writer, he is the author is several books, including Postcards from the Brain Museum, The Words We Live By, and, jointly with Dr Allan H. Ropper, Reaching Down the Rabbit Hole.