Perceptual experiments have identied three types of neural pathways that constitute color: desktop technological know-how red green pathway that signals variations between L and M cone responses, desktop technological know-how blue yellow pathway that signs variations among S cone responses and computer technology sum of L and M cone responses, and computing device technology luminance pathway that signals desktop technology sum of L and M cone responses. Two main hypotheses were proposed that link neural undertaking and color. One emphasizes areas in cortex that can play desktop technology particular role in color perception, and programming second emphasizes computer technology stream of color processing stages starting in programming retina and lengthening into programming cortex Recently, researchers used fMRI programmers degree color associated endeavor in programming human brain. They measured programming change in recreation caused by achromatic and colored stimuliOther outcomes from several laboratories show that opponent color signs can be measured in computing device science collection of visual areas, including early visual areas. For instance, for bound stimuli, programming most helpful responses in area V1 are caused by lights that excite opponent color mechanisms. Measurements with contrast reversing lights and straightforward rectangular styles reveal effective color opponent indications along programming pathway from V1 programmers V2 and V4/V8.