1. Department of Systems Neuroscience, University Medical Center Hamburg Eppendorf, Hamburg, Germany
2. Institute of Cognitive Science, University of Colorado Boulder, Boulder, United States
3. Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, United States
4. Department of General Psychiatry, University Hospital Heidelberg, Heidelberg, Germany
5. Centre for Functional Magnetic Resonance Imaging of the Brain, University of Oxford, Oxford, United Kingdom