1. Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre Nijmegen, Nijmegen, The Netherlands
2. Department of Biophysics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands
3. Royal Dutch Visio, National Foundation for the Visually Impaired and Blind, Huizen, The Netherlands
4. Bartiméus, Institute for the Visually Impaired, Zeist, The Netherlands