Gestalt psychology is an approach to studying the mind and brain operating on the principle that the brain is holistic, parallel and analog, with self-organizing tendencies.
Gestalt psychology principles are:
Figure-ground principle, which describes the process of identifying a figure from the background.
Proximity, which describes the idea that if objects are close together we tend to group them together.
Similarity, which describes the tendency of the brain to group together objects that are alike.
The principle of closure explains how sometimes we see a complete image even if it’s incomplete.
The principle of continuity explains how the brain prefers to see a continuous motion as opposed to a series of smaller parts.