1. Department of Computer Science, Yale University, New Haven, CT 06511
2. Department of Neurobiology, Duke University, Durham, NC 27708
3. Department of Physiology, University of California, San Francisco, CA 94143
4. Department of Ophthalmology, David Geffen School of Medicine, Stein Eye Institute, University of California, Los Angeles, CA 90095
5. Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, CA 94143
6. Department of Biomedical Engineering, Yale University, New Haven, CT 06511