What is the main proposition of Gestalt phychologists with respect to perception of the visual field?

According to Gestalt psychologists, human beings perceive different stimuli not as discrete elements, but as an organised “whole” that carries a definite form. They believe that the form of an object lies in its whole, which is different from the sum of their parts. For example, a flower-pot with a bunch of flowers is a whole. If the flowers are removed, the flowerpot still remains a whole. It is the configuration of the flower pot that has changed. Flower pot with flowers is one configuration, without flowers it is another configuration.

The Gestalt psychologists also indicate that cerebral processes of human beings are always oriented towards the perception of a good figure or pragnan. That is the reason why human beings perceive everything in an organised form. The most primitive organisation takes place in the form of figure-ground segregation. When we look at a surface, certain aspects of the surface clearly stand out as separate entities, whereas others do not. For example, when we see words on a page, or a painting on a wall, or birds flying in the sky, the words, the painting, and the birds stand out from the background, and are perceived as figures, while the page, wall and sky stay behind the figure and are perceived as background.