About the Authors
Center for Cognitive Neuroscience, Duke University, Durham, North Carolina, United States of America
Department of Psychopharmacology, University of Utrecht, Utrecht, The Netherlands
Department of Psychiatry, Duke University, Durham, North Carolina, United States of America
The authors have declared that no competing interests exist.
TGtJ and MGW conceived and designed the experiments, analyzed the data, and wrote the paper. TGtJ performed the experiments.