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- W1538261442 abstract "Narrow-band-filtered random-dot stereograms were used to determine stereo thresholds for detecting sinusoidal disparity modulations. These stereograms were designed to stimulate selectively channels tuned to luminance and corrugation spatial frequencies (Schumer and Ganz, 1979 Vision Research19 1303 – 1314). Thresholds were determined for corrugation frequencies ranging from 0.125 to 1 cycle deg −1 , luminance centre spatial frequencies ranging from 1 to 8 cycles deg −1 and disparity pedestal sizes ranging from −32 to +32 min arc. For small disparity pedestals, lowest modulation thresholds were found around 0.5 cycle deg −1 corrugation frequency and 4 cycles deg −1 luminance centre spatial frequency. For large disparity pedestals (±32 arc min), lowest thresholds were shifted towards the lower corrugation frequencies (0.125 cycle deg −1 ) and lower luminance frequencies (2 cycles deg −1 ). There was a significant interaction between luminance spatial frequency and disparity pedestal size. For small pedestals, lowest thresholds were found with the highest luminance frequency pattern (4 cycles deg −1 ). For large pedestals, best performance shifted towards the low-frequency patterns (1 cycle deg −1 ). This effect demonstrates a massive reduction in stereo-efficiency for high-frequency patterns in the luminance domain at large disparity pedestals which is consistent with the ‘size-disparity relation’ proposed by previous researchers." @default.
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- W1538261442 date "1996-08-01" @default.
- W1538261442 modified "2023-09-23" @default.
- W1538261442 title "Disparity Modulation Sensitivity for Narrow-Band-Filtered Stereograms Viewed out of the Plane of Fixation" @default.
- W1538261442 doi "https://doi.org/10.1068/v96p0206" @default.
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