About the Authors

Mariano Sigman

To whom correspondence should be addressed. E-mail: sigman@shfj.cea.fr

Affiliation Unité INSERM 562, Cognitive Neuroimaging, Service Hospitalier Frédéric Joliot, CEA/DRM/DSV, Orsay cedex, France

Stanislas Dehaene

Affiliation Unité INSERM 562, Cognitive Neuroimaging, Service Hospitalier Frédéric Joliot, CEA/DRM/DSV, Orsay cedex, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

MS and SD conceived and designed the experiments. MS performed the experiments and analyzed the data. MS and SD wrote the paper.