About the Authors
Wellcome Trust Centre for Neuroimaging, University College of London, London, United Kingdom
Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Zurich, Switzerland
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JD KP KS. Performed the experiments: JD KP. Analyzed the data: JD. Contributed reagents/materials/analysis tools: JD. Wrote the paper: JD KF KS. Revised the Manuscript: KP KF KS.