About the Author DALE PURVES Duke University, USA. GEORGE J. AUGUSTINE Duke University, USA. DAVID FITZPATRICK Duke University, USA. WILLIAM C. HALL Duke University, USA. ANTHONY-SAMUEL LAMANTIA University of North Carolina, USA. JAMES O. MCNAMARA Duke University, USA. LEONARD E. WHITE Duke University, USA.

About the Author DALE PURVES Duke University, USA. GEORGE J. AUGUSTINE Duke University, USA. DAVID FITZPATRICK Duke University, USA. WILLIAM C. HALL Duke University, USA. ANTHONY-SAMUEL LAMANTIA University of North Carolina, USA. JAMES O. MCNAMARA Duke University, USA. LEONARD E. WHITE Duke University, USA.

Michael S. Gazzaniga is Professor of Psychology and Director for the SAGE Center for the Study of Mind at the University of California, Santa Barbara. In addition, he is the Director of the Summer Institute in Cognitive Neuroscience, President of the Cognitive Neuroscience Institute, and a member of the President's Council on Bioethetics.