This document provides an overview of key concepts from Sigmund Freud and Jacques Lacan's psychoanalytic theories. It discusses Freud's concepts of the unconscious, repression, dreams, and the Oedipus complex. For Lacan, it outlines the three registers of human reality - the symbolic, imaginary, and real. It also explains Lacanian concepts like the mirror phase, the Name of the Father, fantasy, symptom, and drive.