About the Authors
School of Optometry, University of California, Berkeley, California, United States of America
Helen Wills Neuroscience Institute, University of California, Berkeley, California, United States of America
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: RWL. Performed the experiments: RWL CN JN. Analyzed the data: RWL. Contributed reagents/materials/analysis tools: RWL. Wrote the paper: RWL DML.