[1] Univ Zurich, Inst Biomed Engn, Translat Neuromodeling Unit TNU, CH-8032 Zurich, Switzerland
[2] ETH, Swiss Fed Inst Technol, CH-8032 Zurich, Switzerland
[3] Univ Zurich, Lab Social & Neural Syst Res SNS, CH-8032 Zurich, Switzerland
[4] UCL, Wellcome Trust Ctr Neuroimaging, London WC1E 6BT, England