About the Authors

Olivia Carter

To whom correspondence should be addressed. E-mail: ocarter@wjh.harvard.edu

Affiliations Vision Sciences Laboratory, Harvard University, Cambridge, Massachusetts, United States of America, Brain Research Institute, Melbourne, Australia

Patrick Cavanagh

Affiliations Vision Sciences Laboratory, Harvard University, Cambridge, Massachusetts, United States of America, Laboratoire de Psychologie de la Perception, Université de Paris Descartes, Paris, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PC OC. Performed the experiments: OC. Analyzed the data: OC. Contributed reagents/materials/analysis tools: PC. Wrote the paper: OC. Other: Did the majority of the computer programming: PC.