the colors

The colors (the perception of colors)
The colors that surround us it look like to us the most natural of the world. The colors stimulate our senses and do that our lives are more interesting and varied. The emotion and the intuition prevail in the human being, whereas the rational thing is less important than we believe. The color influences directly the pressure of the blood, the muscles and the nerves and provokes important associations in the human brain. For this reason it can have stimulant or relaxing effects.

At the back of the eye there exist million specializing cells in detecting the proceeding wave lengths from our environment. These wonderful cells, principally the cones and the small sticks, gather the different parts of the spectrum of solar light and transform them into electrical impulses, which are sent then to the brain across the optical nerves, being this one the manager of creating the sensation of the color. The cones center in a region near the center of the retina so called fovea. His distribution follows an angle of about 2 ° counted from the fovea. The quantity of cones is 6 millions and some of them have a nervous completion that goes to the brain. The cones are the persons in charge of the vision of the color and it is believed that there are three types of cones, sensitive to the colors red, green and blue, respectively. Given his form of connection to the nervous completions that go to the brain, they are the persons in charge of the spatial definition. Also they are slightly sensitive to the intensity of the light and provide vision photonic and vision to high levels. The canes centers in zones removed from the fovea and are the persons in charge of the vision ectopic and vision to low levels. The canes share the nervous completions that go to the brain, being therefore his contribution to the spatial slightly important definition. The quantity of canes places about 100 millions and they are not sensitive to the color. The canes are much more sensitive than the cones to the luminous intensity, for what they contribute to the vision of the color aspects as the sheen and the tone, and are the persons in charge of the night vision.
Gledimar Aponte Rivera 801-08-0249