Definition of Optical Illusion

We understand by optical illusion all those images or visual representations of reality that suppose some alteration of it according to the normally accepted parameters. Optical illusions are generated from the modification of the common elements of certain images and therefore, the eye receives certain information that the brain cannot understand as logical and then they call the attention or they generate some kind of surprise.

Optical illusions, as the name implies, are always visual. This means that the only way to know and recognize optical illusions is through sight, not one of the others. senses As the touch, taste, smell or hearing. Optical illusions can be very varied and generate different sensations according to each person since each individual captures and apprehends them in a particular and subjective way.

There are two main types of optical illusions: those that involve an alteration of the picture at a physical level, that is, the image is altered based on parameters such as the

brightness, light, darkness, color (for example, an image that has a particular light and makes it appear to human eyes that that light is a divine apparition). Then, we can also talk about optical illusions that have to do with the previous existence of a certain knowledge about reality, which makes us realize when the image is not correct or true What representation of reality (for example, when a staircase is infinite and space is altered in terms of gravity).

Optical illusions can be voluntarily generated from the art or the planned modification of images. However, the alteration mental that a person may suffer occasionally or permanently can also make illusions appear involuntary optics such as the famous mirages by wrongly capturing everything that surrounds the individual.

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