Anomaly

They are drastic alterations in a perceptual environment. All anomalies have the property of drawing attention quickly and peremptorily to themselves. For this reason they are used in visual communication to direct the gaze of the spectators. They always generate expectations in the viewer. It is a natural phenomenon linked to a thousand processes that operate in nature, such as the fall of the leaves of a tree. Its color change is an anomaly against the green of the leaves when they are active.