The unconscious is the part of the mind which is inaccessible to the conscious mind but which affects behaviour and emotions. (117)
Unconscious is lack of awareness of mental experience as perceptions, thoughts, emotions, lack of deliberate intention.
It is associated with loss of consciousness, lack of consciousness and is a dramatic alteration of mental state. It involves complete or near-complete lack of responsiveness to environmental stimuli.
The concept of the psychoanalytic unconscious is associated with cognitive processes (implicit cognition) that take place outside of awareness.
Unconscious in psychoanalysis is a part of the mind containing repressed instincts and their representative wishes, not accessible to direct examinations.
Barrier of censorship exists between the unconscious and the preconscious-conscious system.