Rod OpsinsLight Signal TransductionRetinal Ganglion CellsReflex, PupillaryLightTranscription Factor Brn-3CTranscription Factor Brn-3BCircadian RhythmAmacrine CellsRetinal Cone Photoreceptor CellsPhotic StimulationVisual PathwaysPhotoreceptor Cells, VertebrateRetinaSuprachiasmatic NucleusVision, OcularRetinal Rod Photoreceptor CellsPhotoreceptor CellsAnimals, NewbornPatch-Clamp TechniquesMice, KnockoutAction Potentials