title: The spatiotemporal properties of the r-g X-cell channel.
abstract: Analysis of the simple-opponent r-g receptive field of the X-channel shows that it is tuned to both high and low temporal frequencies, high and low spatial frequencies, and that its spectral sensitivity is both chromatic and achromatic.
mesh_terms: D000818:Animals; D003118:Color Perception; D005584:Fovea Centralis / Q000166:cytology / Q000502:physiology*; D008266:Macula Lutea / Q000502:physiology*; D008959:Models, Neurological; D012684:Sensory Thresholds; D013028:Space Perception / Q000502:physiology*; D013997:Time Factors; D014794:Visual Fields; D014795:Visual Pathways / Q000502:physiology*