About the Authors

Alex S. Baldwin

alexsbaldwin@googlemail.com

Affiliation McGill Vision Research, Department of Ophthalmology, McGill University, Montreal, Canada

Daniel H. Baker

Affiliation Department of Psychology, University of York, York, England

Robert F. Hess

Affiliation McGill Vision Research, Department of Ophthalmology, McGill University, Montreal, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AB RH. Performed the experiments: AB DB. Analyzed the data: AB. Contributed reagents/materials/analysis tools: RH DB. Wrote the paper: AB DB RH.