TY - JOUR
T1 - Dissociation of equilibrium points for colordiscrimination and color-appearance mechanisms in incomplete chromatic adaptation
AU - Sato, Tomoharu
AU - Nagai, Takehiro
AU - Kuriki, Ichiro
AU - Nakauchi, Shigeki
N1 - Funding Information:
Japan Society for the Promotion of Science (JSPS) KAKENHI (24700206); Cooperative Research Project (H25/A07); Research Institute of Electrical Communication, Tohoku University.
Publisher Copyright:
© 2016 Optical Society of America.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - We compared the color-discrimination thresholds and supra-threshold color differences (STCDs) obtained in complete chromatic adaptation (gray) and incomplete chromatic adaptation (red). The color-difference profiles were examined by evaluating the perceptual distances between various color pairs using maximum likelihood difference scaling. In the gray condition, the chromaticities corresponding with the smallest threshold and the largest color difference were almost identical. In contrast, in the red condition, they were dissociated. The peaks of the sensitivity functions derived from the color-discrimination thresholds and STCDs along the L-M axis were systematically different between the adaptation conditions. These results suggest that the color signals involved in color discrimination and STCD tasks are controlled by separate mechanisms with different characteristic properties.
AB - We compared the color-discrimination thresholds and supra-threshold color differences (STCDs) obtained in complete chromatic adaptation (gray) and incomplete chromatic adaptation (red). The color-difference profiles were examined by evaluating the perceptual distances between various color pairs using maximum likelihood difference scaling. In the gray condition, the chromaticities corresponding with the smallest threshold and the largest color difference were almost identical. In contrast, in the red condition, they were dissociated. The peaks of the sensitivity functions derived from the color-discrimination thresholds and STCDs along the L-M axis were systematically different between the adaptation conditions. These results suggest that the color signals involved in color discrimination and STCD tasks are controlled by separate mechanisms with different characteristic properties.
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U2 - 10.1364/JOSAA.33.00A150
DO - 10.1364/JOSAA.33.00A150
M3 - Article
C2 - 26974919
AN - SCOPUS:84962348984
VL - 33
SP - A150-A163
JO - Journal of the Optical Society of America A: Optics and Image Science, and Vision
JF - Journal of the Optical Society of America A: Optics and Image Science, and Vision
SN - 0740-3232
IS - 3
ER -