Scientists explain why a person is colour vision
Light-sensitive receptors in the eyes of people in the course of evolution have adapted well to identify key social changes in human behavior related to the color of his face, for example, redness due to anxiety or embarrassment.
“We have a very strange ability to distinguish colors. Our red and green receptors are able to detect very similar colors. Moreover, the color the human eye is far from perfect, and when we design color detectors, for example, for digital cameras, we create another type of color vision,” said Dr. James Higham, an anthropologist at the University of new York, writes Daily Mail.
Scientists have two theories as to why the person needs it is the perception of colors. The first is that vision allows primates to distinguish subtle shades of green and red that can be helpful when searching for red fruit among green leaves. The second theory suggests that humans and primates must be able to distinguish minor variations in color of the skin (particularly facial skin), in the framework of social interaction.
For example, females of some species of monkeys the red colour of the face and genitals give the males to know about the readiness to mate. Likewise, people inform each other about any social situations by changing colors, for example, redness.
Well people recognize emotions on the faces of the other people on the basis of various signals. Some of them can be associated with a slight discoloration of the face due to blood flow. This can result in embarrassment, anxiety, worry, and physical, uprajneniyam Hilanthropy at the University of new York
To confirm the theory of social interaction, the researchers gave 60 participants view a series of photographs of female rhesus macaque color of the muzzle which varied depending on the readiness to mate.
With the help of a special program, scientists have altered the photos under different types of color vision. The part of study participants saw monkeys in the photo as what they would have seen the man and the primates in real life. Others saw images of human eyes with different levels of color blindness. Others got the photo after processing in a digital camera. The experiment participants had to identify the colors on the face of a monkey. The study showed that people who viewed images transferred in accordance with the visual system of primates, faster and more accurately identified changes in the color of the muzzle macaques.
Thus scientists found that the human eye is so well distinguish the color change that can read facial cues better than a digital camera.
Moreover, the color the human eye is far from perfect, and when we design color detectors, for example, for digital cameras, we create another type of color vision.