Stanislav Grof’s description of the organization of memory in the human consciousness: A COEX system is a dynamic constellation of memories (and associated fantasy material) from different periods of the individual’s life, with the common denominator of a strong emotional charge of the same quality, intense physical sensation of the same kind, or the fact that they share some other important elements. The COEX systems represent a general organising principle operating on all levels of the psyche.

Grof, Beyond the Brain p.97