1 Chair for Cognitive Systems, Department of Electrical and Computer Engineering, Technical University of Munich, Arcisstrasse 21, 80333 München, Germany. gordon@tum.de.
2 Center of Competence NeuroEngineering, Technical University of Munich, Arcisstrasse 21, 80333 München, Germany.
3 Chair for Cognitive Systems, Department of Electrical and Computer Engineering, Technical University of Munich, Arcisstrasse 21, 80333 München, Germany.
4 Center for Bioelectric Interfaces of the Institute for Cognitive Neuroscience, National Research University Higher School of Economics, Myasnitskaya 13, building 4, 101000 Moscow, Russia.
5 I.M. Sechenov First Moscow State Medical University, 2-4 Bolshaya Pirogovskaya Street, 119991 Moscow, Russia.
6 Department of Neurobiology, Duke University Center for Neuroengineering, Duke University, Durham, NC 27710, USA.
7 Departments of Biomedical Engineering and Psychology and Neuroscience, Duke University, Durham, NC 27710, USA.
8 Edmund and Lily Safra International Institute of Neurosciences, Natal 59066060, Brazil.