Concept in Definition ABC

Visual refers to that straight line that includes from the human eye to the object or objects of attention, that is, visual is everything that can be perceived with the gaze and the eyes, the organs par excellence of the sense of sight, which is one of the five senses with which we human beings will be the ones that allow us to see things in the sensitive world that surrounds us.

First of all the visual implies the skill of detecting light and the possibilities of interpreting it. First the image of the stimulus is formed before the retina and it will be the cells that make it up, the photoreceptors, which will be responsible for capturing the light, then other cells, also from the retina, are responsible for transform this light into electrochemical impulses and transport them to the optic nerve and from there to the brain regions that have the task of final decoding of these and the later building of the distances, movements, colors and shapes of the objects that surround us and enter our vision.

Vision uses and uses numerous sources of information to interpret and get an idea of ​​the world around us. For example, the use of the eyes or also called binocular vision is what allows us decide the distance of any object or make a distinction between different movements, such as the typical movement of an animal like the cat and the movement that it stars in, but with a garden in the background and with some prey in its mouth.

Although the formal study of the visual began in the 19th century thanks to the contribution of scholars such as Hermann von Helmholtz, responsible for the first psychophysical experiments and methods that tried to shed light on issues such as those mentioned above, it would not be until the twentieth century, when the school German of the Gestalt starts to stomp, it will be discovered that vision is also strongly guided by processes that involve a journey from top to bottom and by phenomena such as that human beings tend to complete those images that are presented to us as incomplete before our visual.
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