Michael S. Gazzaniga is Distinguished Professor and Director of the Sage Center for the Study of the Mind at the University of California, Santa Barbara. In his career, he has introduced thousands of students to psychology and cognitive neuroscience. Richard B. Ivry is Professor of Psychology and Neuroscience at the University of California, Berkeley. He received his Ph.D. from the University of Oregon. His research focuses on the relationship of cognition and action, using the many methods of cognitive neuroscience. Dr. Ivry is a senior editor for the Journal of Cognitive Neuroscience and serves on the editorial boards of a number of other journals. Among his many honors, Dr. Ivry received the Troland Research Award from the National Academy of Sciences in 1997, and was elected a fellow of the Society of Experimental Psychologists in 2003 and the Association for Psychological Science in 2006. George R. Mangun is Professor of Psychology and Neurology in the Center for Mind and Brain at the University of California, Davis. He received his Ph.D. from the University of California, San Diego. He was the founding director of the Center for Mind and Brain, and also of the Center for Cognitive Neuroscience at Duke University. In 1992, with Michael S. Gazzaniga and others, he founded the Cognitive Neuroscience Society. Dr. Mangun serves as an associate editor for the Journal of Cognitive Neuroscience, and is Editor-in-Chief of the series The Neuroscience of Attention, published by Oxford University Press. He uses cognitive neuroscience tools in the study of brain attention mechanisms. He is a fellow of the Association for Psychological Science, and the American Association for the Advancement of Science.