1. From the Laboratory for Integrative Neural Systems, Riken Brain Science Institute, Saitama, Japan; the2Laboratory of Visual Physiology, National Institute of Sensory Organs, Tokyo, Japan; and the
2. Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
3. From the Laboratory for Integrative Neural Systems, Riken Brain Science Institute, Saitama, Japan; the