“Another important discovery of our research was that memories of emotional and physical experiences are stored in the psyche not as isolated bits and pieces but in the form of complex constellations, which I call COEX systems (for "systems of condensed experience"). Each COEX system consists of emotionally charged memories from different periods of our lives; the common denominator that brings them together is that they share the same emotional quality or physical sensation. Each COEX may have many layers, each permeated by its central theme, sensations, and emotional qualities. Many times we can identify individual layers according to the different periods of the person's life.”