The unconscious body mind is thought to be a deeper part of a person’s mind that works without that person knowing it. Feelings, thoughts, desires or emotions appear to come out of nowhere, leaving the person to question where they came from. Even though these processes exist well under the surface of conscious awareness, they are theorized to exert an impact on behavior.
Empirical evidence suggests that unconscious phenomena include repressed feelings. Furthermore automatic skills, subliminal perceptions, and automatic reactions, and possibly also complexes, hidden phobias and desires.
In psychoanalytic theory, unconscious processes are understood to be directly represented in dreams. As well as in slips of the tongue and jokes. Thus the unconscious mind can be seen as the source of dreams and automatic thoughts (those that appear without any apparent cause). The repository of forgotten memories (that may still be accessible to consciousness at some later time). And the locus of implicit knowledge (the things that we have learned so well that we do them without thinking).
The idea of internalised unconscious processes in the mind was also instigated in antiquity. And has been explored across a wide variety of cultures. Unconscious aspects of mentality were referred to between 2,500 and 600 BC in the Hindu texts known as the Vedas, found today in Ayurvedic medicine.