Interdisciplinary Center for Neural Computation, Hebrew University of Jerusalem, Jerusalem, Israel.|Interdisciplinary Center for Neural Computation, Hebrew University of Jerusalem, Jerusalem, Israel.|Interdisciplinary Center for Neural Computation, Hebrew University of Jerusalem, Jerusalem, Israel.|Interdisciplinary Center for Neural Computation, Hebrew University of Jerusalem, Jerusalem, Israel.|Interdisciplinary Center for Neural Computation, Hebrew University of Jerusalem, Jerusalem, Israel.|Interdisciplinary Center for Neural Computation, Hebrew University of Jerusalem, Jerusalem, Israel.