title: Receptive fields of single optic nerve fibers in a mammal with an all-cone retina. II: directionally selective units.
mesh_terms: D000818:Animals; D009039:Motion Perception; D009900:Optic Nerve / Q000502:physiology*; D010786:Photoreceptor Cells / Q000502:physiology*; D012168:Retinal Pigments; D012589:Sciuridae; D013238:Stereotaxic Techniques; D009435:Synaptic Transmission; D013997:Time Factors; D014794:Visual Fields; D014796:Visual Perception
chemical_list: D012168:Retinal Pigments