Max-Planck Institute of Cognitive Neuroscience, Germany Maren Grigutsch Rainer Nowagk Erdmut Pfeifer ANT Software BV, The Netherlands, www.ant-neuro.com Maarten van de Velde Robert Smies Johan Wiskerke Wilke Havinga Tijmen Vroegop Radboud University, Nijmegen, The Netherlands Robert Oostenveld