1. Division of Neurobiology, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
2. International Center for Primate Brain Research, Center for Excellence in Brain Science and Intelligence, Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
3. Werner Reichardt Center for Integrative Neuroscience, Karl Eberhard University of Tübingen, Tübingen, Germany
4. Max Planck Institute for Biological Cybernetics, Tübingen, Germany