title: Psychoanalytic theory of the instinctual drives in relation to recent developments.
mesh_terms: D000818:Animals; D003220:Conflict, Psychological; D003259:Consummatory Behavior; D004532:Ego; D006801:Humans; D006815:Hunger; D007031:Hypothalamus / Q000502:physiology; D007323:Instinct; D011574:Psychoanalytic Theory; D012895:Sleep, REM