Gatsby Computational Neuroscience Unit, University College London, London, United Kingdom. qhuys@cantab.net|Gatsby Computational Neuroscience Unit, University College London, London, United Kingdom. qhuys@cantab.net|Gatsby Computational Neuroscience Unit, University College London, London, United Kingdom. qhuys@cantab.net|Gatsby Computational Neuroscience Unit, University College London, London, United Kingdom. qhuys@cantab.net|Gatsby Computational Neuroscience Unit, University College London, London, United Kingdom. qhuys@cantab.net|Gatsby Computational Neuroscience Unit, University College London, London, United Kingdom. qhuys@cantab.net