J. Allan Hobson is Professor of Psychiatry, Emeritus, at Harvard Medical School. He is the author of The Dreaming Brain: How the Brain Creates Both the Sense and the Nonsense of Dreams, Dreaming as Delirium: How the Brain Goes Out of Its Mind(MIT Press, 1999), The Dream Drugstore: Chemically Altered States of Consciousness(MIT Press, 1999, 2001), and other books.