Throughout the analysis of a dream, it is given a description of relational and intrapsychic elements that characterize the operation of the limit. By limit I mean a complex psychic processing area. This area presides over important functions which are essential in the structuring of psychic spaces, such as: selective protection, regulation of the interface between internal/external and the connection between the various districts of the psychic apparatus. Psychic barriers, as a pathological declination of the limit, isolate and block permeability and communication both in the interpsychic and intrapsychic areas. It is given a description of the topical and formal aspects of splitting and of the melancholic nucleus.
Keywords: Psychic envelope, Ego frontier, skin Ego, psychic barriers, splitting, melancholic nucleus.