Department of Molecular Biology & Biochemistry, Middlebury College, Middlebury, Vermont, United States of America.|Department of Physics, University of Notre Dame, Notre Dame, Indiana, United States of America.|Department of Biology, Colgate University, Hamilton, New York, United States of America.|Department of Psychology, Northwestern University, Evanston, Illinois, United States of America.|Department of Life Sciences, Carroll University, Waukesha, Wisconsin, United States of America.