About the Authors
Wellcome Trust Centre for Neuroimaging, University College, London, United Kingdom
Branco-Weiss Laboratory for Social and Neural Systems Research, Empirical Research in Economics, University of Zurich, Zurich, Switzerland
The authors have declared that no competing interests exist.
Conceived and designed the experiments: TMS APL. Performed the experiments: TMS APL. Analyzed the data: WDP MJR TMS APL. Wrote the paper: WDP KES JD KJF.