The effect of perceptual readiness

This effect lies in the fact that the human eye "sees" what the brain is prepared to see, based on the overall context of the image. (The opposite effect when a person "wants" to see something he was not expecting.) This perception is based on the fact that all perceptual experience is the end product of a categorization process. Object contains a set of signs from which the person selects informative and identifying the object, performs the operation of allocating the characteristic to the category. The more people are willing to carry an object to some category, the fewer signs he needed. Thus, the perception of the object depends on it.
The picture illustrating this effect is the Illusion of Selfridge.
Thanks to this illusion, the witness could see NOF on the photos and in real life. In particular, UFOs, ghosts, Bigfoot.

Translated by «Yandex.Translator»