[1] Univ Geneva, Lab Behav Neurol & Imaging Cognit, CH-1211 Geneva 4, Switzerland
[2] Univ Hosp Geneva, Dept Neurol, Geneva, Switzerland
[3] Univ Ghent, Dept Expt Clin & Hlth Psychol, Ghent, Belgium
[4] Univ Geneva, Dept Radiol & Med Informat, CH-1211 Geneva 4, Switzerland
[5] Ecole Polytech Fed Lausanne, Inst Bioengn, Lausanne, Switzerland