Unité de Neuroscience, Information et Complexité (UNIC), CNRS, Gif-sur-Yvette, France.|Faculty of Biology, and Bernstein Center Freiburg, University of Freiburg, Freiburg, Germany.|Unité de Neuroscience, Information et Complexité (UNIC), CNRS, Gif-sur-Yvette, France.|Faculty of Biology, and Bernstein Center Freiburg, University of Freiburg, Freiburg, Germany.|Faculty of Biology, and Bernstein Center Freiburg, University of Freiburg, Freiburg, Germany.