Abstract
This review provided a comprehensive examination of various theories that attempt to explain hypnosis, focusing on the interplay between conscious and unconscious processes. We conducted a thorough analysis of key theories, from historical origins to recent models centered on cognition, social factors, and attributions. A central theme emerged: the critical role of the unconscious as a "gatekeeper" that modulates and guides the hypnotic experience. This notion appears in various forms across many theories, with the unconscious actively shaping and regulating the flow of information between conscious and unconscious realms during hypnosis. Understanding this dynamic interplay is crucial for comprehending the complex nature of hypnosis. The synthesized view of the unconscious as a "gatekeeper" offers a framework for integrating insights from diverse perspectives and highlights the centrality of unconscious processes in shaping hypnotic phenomena. Future research should further investigate the mechanisms of this unconscious "gatekeeper" role and its impact on hypnosis.