The accessibility of spatial channels for stereo and motion

摘要: Using fractal noise images, we measured the dependence of Dmin on spatial passband (spatial frequency and orientation) over which information was correlated either between eyes for stereo or sequential frames motion. Without affecting amplitude spectrum stimulus used idealized filters to scramble phase components outside a pre-defined passband. simple Gaussian model in performance depends signal/noise within restricted region, obtained estimates bandwidth narrowest underlying orientation spectral region subserving these two comparable tasks. Spatial bandwidths varied with peak but were very broad approximating itself. Orientation properties mechanisms isotropic. These results suggest that independent activity individual narrowband channels is not perceptually accessible