Definition: Psychoanalysis is a psychotherapeutic method that combines elements of psychophysics, psychology, and sociology in order to investigate the mental processes underlying human behavior. In psychoanalysis, the goal is to understand how the conscious mind operates through a process known as the "psyche." The "psyche" refers to the unconscious part of the individual's mind, which may have been triggered by external events or stimuli. The "psyche" is often represented as a box or a cage that holds all the thoughts and feelings that we do not want to experience. The psychoanalyst uses various techniques such as observation, free association, dream analysis, and group therapy to help the patient understand their unconscious mind and gain insight into their behavior and emotions. The goal of psychoanalysis is to uncover the underlying causes of psychological disorders and improve the patient's ability to cope with their problems. In summary, psychoanalysis combines elements of psychology, sociology, and physics in order to investigate mental processes underlying human behavior. It provides a deep understanding of the unconscious mind and can help individuals overcome psychological disorders by helping them understand their own psyche and work through difficult emotions and thoughts.