Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany , Group for Neural Theory, Institute of Cognitive Studies, École Normale Supérieure, Paris, France.|Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany , Group for Neural Theory, Institute of Cognitive Studies, École Normale Supérieure, Paris, France.|Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany , Group for Neural Theory, Institute of Cognitive Studies, École Normale Supérieure, Paris, France.