About the Authors

Manuel Spitschan

Affiliation Department of Psychology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Geoffrey K. Aguirre

brainard@psych.upenn.edu (DB); aguirreg@mail.med.upenn.edu (GA)

Affiliation Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

David H. Brainard

brainard@psych.upenn.edu (DB); aguirreg@mail.med.upenn.edu (GA)

Affiliation Department of Psychology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors declare competing financial interests. A provisional patent disclosure on the robust photoreceptor isolation method and its applications has been filed by the University of Pennsylvania with GKA, DHB, and MS as inventors (“ROBUST TARGETING OF PHOTOSENSITIVE MOLECULES / Serial No. 62/049,242”, September 11, 2014). This does not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MS GKA DHB. Performed the experiments: MS GKA DHB. Analyzed the data: MS GKA DHB. Wrote the paper: MS GKA DHB.