title: Central nervous system: afferent mechanisms.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D001717:Birds / Q000502:physiology; D002415:Cats; D003118:Color Perception; D004594:Electrophysiology; D005724:Ganglia; D006801:Humans; D007536:Isomerism; D008027:Light; D008564:Membrane Potentials; D008566:Membranes / Q000648:ultrastructure; D008968:Molecular Conformation; D008970:Molecular Weight; D010539:Permeability; D010786:Photoreceptor Cells / Q000378:metabolism / Q000502:physiology* / Q000648:ultrastructure; D012160:Retina / Q000378:metabolism; D012168:Retinal Pigments / Q000032:analysis / Q000378:metabolism / Q000502:physiology*; D012172:Retinaldehyde / Q000378:metabolism; D012964:Sodium / Q000378:metabolism; D013045:Species Specificity; D014426:Turtles / Q000502:physiology; D014785:Vision, Ocular; D014793:Visual Cortex / Q000033:anatomy & histology
chemical_list: D000596:Amino Acids; D012168:Retinal Pigments; D012964:Sodium; D012172:Retinaldehyde