1. Department of Psychology, Justus Liebig University, Giessen, Germany
2. Center for Mind, Brain, and Behavior (CMBB), Universities of Marburg and Giessen, Germany
3. katja.fiehler@psychol.uni-giessen.de
4. Department of Human Movement Sciences, Vrije Universiteit Amsterdam, The Netherlands
5. Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, Canada