Large shift in color appearance induced by motion in context
32.12, Sunday, May 12, 10:45 am - 12:30 pm, Royal Ballroom 1-3
Sang Wook Hong1, Min-Suk Kang2; 1Department of Psychology, Florida Atlantic University, 2Department of Psychology, Sungkyunkwan University
Hidden formatting deleted. Delete this text! none;mso-layout-grid-align:none;text-autospace:none">Color appearance is not solely determined by spectral light reflected from a surface or an object. Surrounding chromatic context modulates the perception of color. Here we present a novel and strong chromatic induction, in which color appearance of a dot, presented on a equiluminant equal-energy-spectrum (EES) white background, is largely de-saturated by presenting a moving dot with physically identical chromaticity. The direction of shift in color appearance is consistent with the one observed after prolonged adaptation to chromatic contrast. However, this chromatic induction should be distinguished from the color shift by prolonged adaptation in that this appearance shift occurs instantaneously after some dots set in motion. Furthermore, this large shift in color did not occur either when moving dots were achromatic (black or white) or when the chromatic contrast of the moving dot was opposite to the chromatic contrast of the stationary dot. We conclude that this de-saturation of color appearance of the stationary dot result from the reduced chromatic contrast between the stationary and the background due to chromatic contrast normalization. We will discuss the role of the chromatic and luminance channels, and the ON and OFF chromatic channels.