2-5 The border detection between two stimuli in various surround luminance conditions Part2 : Influence of chromaticity of stimuli and examination of modeling

Abstract

Border detection between two stimuli of different luminance was investigated using red, green, and blue stimuli for a wide range of reference luminance in surround luminance of 0.001 and 500 cd/m^2 with and without artificial pupil. Decrease of threshold contrast with artificial pupil is most eminent for the blue light indicating the effect of spherical aberration exists without artificial pupil. Physiological model of underlying mechanism which can explain the change of contrast curves with surround luminance is derived.