1. Vision and Control of Action (VISCA) Group, Department of Cognition, Development and Psychology of Education, Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain
2. Present address: Centre d'Économie de la Sorbonne (CNRS & Université Paris), Paris, France
3. VISCA Group, Department of Cognition, Development and Psychology of Education, Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain
4. j.lopezmoliner@ub.edu