Color biology and sensitivity. By understanding the cone sensitivity curve, we can better understand our response to the selected colors of a space and their strength of inducing a biological response from the viewer. While the response is activated by the physics of light waves, the physical response is both physiological and psychological in the human body. Suppose that white light, which is all wavelengths of light strike the retina. The physiological response include photochemical reactions within the cones producing electrical impulses as signals sent along the nervous system to the brain. When the signals reach the brain, the physiological response is to interpret the meaning of the messages.

The brain responds Acknowledging that the color is white, which is each of the three kinds of cones activated into sending the electrical messages to the brain. Therefore, there is no immediate emotional response unless the intensity is high enough to induce a reaction to the luminosity of light based on an individual's sensitivity to light and shade. If you want a better understanding of light sensitivity or luminosity, and the effects it has on the human psychology, please check out my other lighting course to understand this further