About the Authors

Paul W. K Rothemund

Affiliations Computation and Neural Systems, California Institute of Technology, Pasadena, California, United States of America, Computer Science, California Institute of Technology, Pasadena, California, United States of America

Nick Papadakis

Affiliation Computer Science, California Institute of Technology, Pasadena, California, United States of America

Erik Winfree

To whom correspondence should be addressed. E-mail: winfree@caltech.edu

Affiliations Computation and Neural Systems, California Institute of Technology, Pasadena, California, United States of America, Computer Science, California Institute of Technology, Pasadena, California, United States of America

Competing Interests

The authors have declared that no conflicts of interest exist.

Author Contributions

PWKR and EW conceived and designed the experiments. PWKR, NP, and EW performed the experiments. PWKR and EW analyzed the data. PWKR and EW wrote the paper.