About the Authors

César Rennó-Costa

Affiliations Universitat Pompeu Fabra, Synthetic, Perceptive, Emotive and Cognitive Systems group (SPECS), Barcelona, Spain, Federal University of Rio Grande do Norte (UFRN), Brain Institute (ICe), Natal, Rio Grande do Norte, Brazil

John E. Lisman

Affiliation Brandeis University, Biology Department & Volen Center for Complex Systems, Waltham, Massachusetts, United States of America

Paul F. M. J. Verschure

paul.verschure@upf.edu

Affiliations Universitat Pompeu Fabra, Synthetic, Perceptive, Emotive and Cognitive Systems group (SPECS), Barcelona, Spain, Catalan Institute of Advanced Research (ICREA), Passeig Lluís Companys 23, Barcelona, Spain, Universitat Pompeu Fabra, Center of Autonomous Systems and Neurorobotics (NRAS), Barcelona, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CRC JEL PFMJV. Performed the experiments: CRC. Analyzed the data: CRC JEL PFMJV. Contributed reagents/materials/analysis tools: CRC. Wrote the paper: CRC JEL PFMJV.