1. SPMS, Université de Bourgogne, Pôle AAFE, Esplanade Erasme, BP 26513, F 21065 Dijon Cedex, France; also Institut des Sciences Cognitives, UMR CNRS 5075, Lyon, France
2. Behavioural Brain Sciences Centre, School of Psychology, University of Birmingham, Birmingham B15 2TT, UK