About the Authors
Laboratoire Psychologie de la Perception, CNRS and Université Paris Descartes, Paris, France
Département d'Etudes Cognitives, Ecole Normale Supérieure, Paris, France
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JP RB. Performed the experiments: JP RB. Analyzed the data: JP RB. Wrote the paper: JP RB.