From: Edge integration in achromatic color perception and the lightness–darkness asymmetry
Journal of Vision. 2013;13(14):18. doi:10.1167/13.14.18
Figure Legend:
Some displays used in previous studies to generate lightness matches at odds with the predictions of anchoring theory.
(a) When a decremental disk surrounded is by two concentric annuli and the outer annulus has a lower luminance than
the inner annulus, the luminance of the outer annulus affects the disk lightness (Rudd & Zemach, 2004). This result is
contrary to the anchoring theory prediction that a lower luminance surround should not affect the lightness of a target. It
furthermore shows that the prediction is violated even when the local contrast at the disk/inner annulus border is held
constant. (b) When a decremental target disk is surrounded by two concentric annuli and the outer annulus has the
highest
luminance
in the display, theThe
luminance
of the
annulus
affects
target lightness
even ©
when
the
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of the outer annulus is held constant. A change in the contrast of the disk/inner annulus border modulates the strength of