Department of Mathematics, University at Buffalo - SUNY, Buffalo, New York, United States of America.|Department of Psychology, Drexel University, Philadelphia, Pennsylvania, United States of America.|Department of Biomedical Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.|Human Research and Engineering Directorate, U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland, United States of America.|Department of Mathematics, University at Buffalo - SUNY, Buffalo, New York, United States of America.