About the Authors

Stefano Baldassi, Nicola Megna, David C Burr
Dipartimento di Psicologia, Università di Firenze, Firenze, Italy

David C Burr
Istituto di Neuroscienze del Consiglio Nazionale delle Ricerche, Pisa, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

SB and DCB conceived and designed the experiments. SB and NM performed the experiments and analyzed the data. SB and DCB wrote the paper.