title: Simultaneous masking interactions between chromatic and luminance gratings.
abstract: Simultaneous masking using test and mask gratings composed of isochromatic luminance variations and isoluminant chromatic variations was studied. Masking of chromatic gratings by chromatic gratings shows less spatial-frequency specificity than does masking of luminance gratings by luminance gratings. Luminance gratings mask chromatic gratings of identical space-average luminance and chromaticity little and only when the spatial frequencies of the test and mask gratings are similar. Chromatic gratings, however, profoundly mask luminance gratings with a degree of spatial-frequency specificity akin to that of luminance-luminance masking. The insensitivity of the luminance-color masking results to the relative phase of the chromatic and luminance gratings indicates that the observed asymmetry is not due to local interactions.
mesh_terms: D003118:Color Perception / Q000502:physiology*; D003119:Color Perception Tests / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D010775:Photic Stimulation / Q000295:instrumentation / Q000379:methods; D013028:Space Perception / Q000502:physiology*