Abstract
When yellow targets are surrounded by higher-luminance stimuli, they are perceived as brown. Previous studies examined some of the basic features of brown, and revealed surround stimuli are indispensable to perceive brown. However, we know little about what features of surrounds induce brown perception. Thus, in this study, we employed homogenous and complex surrounds to examine the influences of surrounds on brown perception in terms of luminance statistics. Result showed that luminance of the test stimulus to produce both pure yellow and pure brown is determined by mean luminance of whole surrounds rather than minimum or maximum luminance.
