Robert G. Shulman is the Sterling Professor of Molecular Biophysics and Biochemistry at Yale University. He received his B.A. and Ph.D. degrees at Columbia in physical chemistry, with an intervening period as Lt(jg) USNR. Soon after graduate studies with C. H. Townes in microwave spectroscopy, he went to Bell Telephone Laboratories, where he started Nuclear Magnetic Resonance research on antiferromagnetics; superconductors; semiconductors; and, eventually, biomolecules. A year working with F. H. C. Crick and S. Brenner on phage genetics solidified his interest in biophysics. He started and led biophysics research at Bell Labs, where he studied a variety of biomolecules by NMR. This led him to in vivo NMR, at first in microorganisms; then animals; and, finally, humans. Since 1979 he has been at Yale University, where he has been following metabolism in vivo by magnetic resonance in brain and muscle measuring changes during activation. He is a member of the National Academy of Sciences and Institute of Medicine.

Marc Raichle is a Professor in the Departments of Radiology, Neurology, and Neurobiology at the Washington University School of Medicine. He is also a Senior Fellow in the McDonnell Center for Studies of Higher Brain Function at Washington University. He received a B.S. and M.D. from the University of Washington in Seattle and his training in neurology at the New York Hospital-Cornell University Medical College where he was introduced to research on brain circulation and metabolism by Fred Plum and Jerry Posner. He joined the faculty of Washington University in 1971 after serving 2 years in the United States Air Force at the School of Aerospace Medicine. His research has focused, broadly, on studies of the brain circulation and metabolism as a means of understanding human brain function in health and disease. He has been active in the development of cognitive neuroscience, serving since its inception as an advisor to the McDonnell-PEW Program in Cognitive Neuroscience. In his spare time he is an amateur oboe/English horn player, sailor, and recreational high-altitude physiologist.

Michael Posner has been professor of psychology at the University of Oregon since 1965. His work has generally been in the area of selective attention. During the 1960s and 1970s, Posner's work relied primarily on chronometric methods and is best described in his Paul Fitts lectures published as Chronometric Explorations of Mind. From 1979 to 1985 Posner directed a laboratory at Good Samaritan Hospital and worked on the role of the parietal lobe and other structures involved in visual orienting. From 1985 to 1988 Posner directed a neuropsychology laboratory in St. Louis where he worked with Marc Raichle and Steve Petersen in developing PET methods appropriate to cognitive studies (see Images of Mind with M. Raichle). Since 1988, Posner has been working on combined spatial and temporal studies exploring the plasticity of human attention and skill acquisition. Posner's work has been recognized by membership in the U.S. National Academy of Sciences, APAs Distinguished Scientific Contribution Award and William James book award (with M. Raichle), and by the Vollum award for outstanding contribution to science and technology in the pacific northwest.

Daniel Dennett was educated at Harvard and Oxford, receiving his D.Phil. in 1965. After six years at University of California Irvine, he moved to Tufts, where he is Distinguished Professor of Arts and Sciences and Director of the Center for Cognitive Studies. It is the author of articles on many issues in artificial intelligence, psychology, and cognitive ethology, as well as in philosophy. His books are Content and Consciousness (1969), Brainstorms (1978), The Mind's I (with Douglas Hofstadter, 1981). Elbow Room (1984), The Intentional Stance (1987), and Consciousness Explained (1991). His new book, Darwin's Dangerous Idea , will be published by Simon & Schuster in spring, 1995.

Alfonso Caramazza is the David T. McLaughlin Distinguished Professor at Dartmouth College. He received the B.A. degree in psychology from McGill University in 1970 and the Ph.D. from Johns Hopkins University in 1974. He joined the Hopkins faculty in 1974 and taught there first in the Psychology Department and then in the Cognitive Science Department, which he helped create. In 1993 he joined the faculty at Dartmouth College. Although his research has focused primarily on the neuropsychology of language processes, he has also made contributions in the areas of normal psycholinguistics, naive physics, and, more recently, perception and attention. Caramazza has been the recipient of a Javits Neuroscience Award and an honorary doctorate from the Catholic University of buvain.

Bill Newsome is a professor in the Department of Neurobiology at the Stanford University School of Medicine. He received his B.S. in physics from Stetson University in 1974 and his Ph.D. in biology from Caltech in 1980. Following postdoctoral work at MH, he served on the faculty at SUNY Stony Brook before joining the Stanford faculty in 1988. His research has focused on the neural mechanisms underlying visual perception and visually guided behavior. Bill was a corecipient of the Rank Prize in optoelectronics in 1992, and received the Minerva Foundation's Golden Brain Award in the same year. This fall he received the Spencer Award, granted yearly by the College of Physicians and Surgeons at Columbia University for highly original contributions to research in neurobiology. In addition, he won the Kaiser Award for excellence in preclinical teaching granted annually by the Stanford School of Medicine.

Stephen M. Kosslyn is Professor of Psychology at Harvard University and an Associate Psychologist in the Department of Neurology at the Massachusetts General Hospital. He received his B.A. in 1970 from UCLA and his Ph.D. from Stanford University in 1974, both in psychology, and taught at Johns Hopkins, Harvard, and Brandeis Universities before joining the Harvard Faculty as Professor of Psychology in 1983. His work focuses on the nature of visual mental imagery and high-level vision, as well as applications of psychological principles to visual display design. He has published over 125 papers on these topics, co-edited five books, and authored or co-authored five books. His books include Image and Mind (1980), Ghosts in the Mind's Machine (1983), Wet Mind: The New Cognitive Neuroscience (with 0. Koenig, 1992), Elements of Graph Design (1994), and Image and Brain: The Resolution of the Imagery Debate (1994). Dr. Kosslyn has received numerous honors, including the National Academy of Sciences Initiatives in Research Award, is currently on the editorial boards of many professional journals, and has served on several National Research Council committees to advise the government on new technologies.

Steven Pinker is a professor in the Department of Brain and Cognitive Sciences at MIT, and in 1994 will become director of its McDonnell-Pew Center for Cognitive Neuroscience. He received his B.K from McGill University in 1976 and his Ph.D. from Harvard University in 1979, both in experimental psychology, and taught at Harvard and Stanford before joining the faculty of MIT in 1982. He has done research in visual cognition and the psychology of language, and is the author of Language Learnability and Language Development (1984) and Learnability and Cognition (1989) and the editor of Visual Cognition (1985), Connections and Symbol (1988, with Jacques Mehler), and Lexical and Conceptual Semantics (1992, with Beth Levin). He was the recipient of the Early Career Award in 1984 and the Boyd McCandless Award in 1986 from the American Psychological Association, a Graduate Teaching Award from MIT in 1986, and the Troland Research Award from the National Academy of Sciences in 1993. His newest book, The Language Instinct , will be published by William Morrow & Company in January 1994.