1. Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
2. MIT Department of Brain and Cognitive Sciences, Cambridge, MA 02139, USA
3. Department of Psychology, The Hebrew University of Jerusalem, Jerusalem 9190501, Israel
4. Department of Neurobiology, The Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel