Trauma-induced mind control (often called trauma-based mind control or torture-based mind control) refers to the deliberate use of severe, repeated psychological and physical trauma to manipulate, fragment, and control a person's thoughts, behaviors, identity, and sense of self. 

This spans historical experiments, abusive relationships, ritualistic or organized abuse, and severe interpersonal trauma.  

Also referred to as spririt possession.  DID Dissassociative Identity Disorder or Multiple Personality Disorder.  

The individual is often unaware but may be missing memories or "parts of the day" or wonder how they got there etc..