The effect of spatial and chromatic parameters on chromatic induction

Chromatic induction is the change in the perceived color of a visual stimulus caused by surrounding stimuli in the field of view. Most reports of chromatic induction present results for a limited range of center and surround colors. We performed a series of forced response color matching trials in which size, location and color of surrounding visual fields were varied. Results are reported which illustrate that the effect of the surround on the center decreases exponentially as a function of separation between center and surround and that the effect of the surround on the center increases exponentially as a function of surround size. We also show that there is an optimal center-surround color difference for which chromatic induction is greatest.