Physical colors, i.e. reflected or emitted lights entering the eyes from a visual environment, are converted into perceived colors sensed by humans neurophysiological mechanisms. These processes involve both three types of photoreceptors, LMS cones, and spectrally opponent non-opponent interactions resulting activity rates ganglion lateral geniculate nucleus cells. Thus, color perception is phe...

Abstract In the contemporary discussions concerning unconscious perception it is not uncommon to postulate that content and phenomenal character are ‘orthogonal’, i.e., there no type of which essentially conscious, but instead, every representational can be either conscious or not. Furthermore, this merely treated as a thesis justified by theoretical investigations, supported empirical consider...

Definition The possibility that naming colors, either in a single instance or habitually over a lifetime, alters. color perception Color perception and color communication When we communicate about the colors of scenes and objects comprising our visual experience, what we see informs our choice of words. A question that has interested many cognitive psychologists is whether the color words we u...

Color is the most frequently studied feature in visual working memory (VWM). Oddly, much of this work de-emphasizes perception, instead making simplifying assumptions about the inputs served to memory. We question these assumptions in light of perception research, and we identify important points of contact between perception and working memory in the case of color. Better characterization of i...

Light enters the eye, is focused by the cornea, passes through the variable-diameter iris, is further focused by the lens, and strikes the light-sensitive receptors of the retina in the back of the eye. The photoreceptors of the retina can be divided into two basic categories: rods and cones. At normal light levels, cones dominate the initial response to light, resulting in photopic vision. Thr...

Categorical perception (CP) occurs when discrimination of items that cross category boundaries is faster or more accurate than discrimination of exemplars from the same category. Categorical perception of color is observed when, for example, a green stimulus and a blue stimulus are more easily distinguished than two stimuli from the same color category (e.g., two different shades of green). Col...

GLCM texture features have been widely used to characterize biomedical images. Most of the previous studies using GLCM features to characterize biomedical images only consider single or limited color space due to the use of only one color model. To mimic human color perception, conventional RGB color model may need to be supplemented with other color space models for better human vision represe...