5) Figure-Ground Perception

Figure-Ground: a grouping where a person identifies a figure from a background. We need to be able to perceive any object distinctively from its surroundings.
This picture is an advertisement for helping kids in Africa. They used figure-ground perception in their design because they used a woman and a child to create the outline of Africa. Our brains perceive the people from the background, but we also see the outline of the continent if we look closer.