that the brain eventually combines. A branch may suggest one side of a nose, another dark mark may resemble an eyebrow, and a lighter region may provide the appearance of skin or facial structure. Individually, none of these elements necessarily looks unusual. Their significance becomes apparent only when the viewer begins treating them as pieces of one larger pattern.
This is related to the broader tendency of human perception to organize separate visual elements into meaningful forms. People are particularly accustomed to recognizing faces because faces are socially important visual
