Transpersonal psychology is a school of psychology that integrates the spiritual and transcendent aspects of the human experience with the framework of modern psychology.
Strong Proponents of this branch of psychology have been Cristina and Stan Grof whose writings cover a vast set of topics within the various realms of subjective experience.
Grof's theory operates with a cartography consisting of three kinds of territories: the realm of the sensory barrier and the personal unconscious (described by psychoanalysis), the perinatal or birth-related realm (organizing principles for the psyche), and the transpersonal realm. According to this view proper engagement with the first two realms sets the stage for an ascent to the third, transpersonal, realm. His early therapy, and research, was carried out with the aid of psychedelic substances such as lysergic acid diethylamide (LSD), psilocybin, mescaline, dipropyl-tryptamine (DPT), and methylene-dioxy-amphetamine (MDA). Later, when LSD was prohibited, Grof developed other methods of therapy, such as holotropic breathwork.
In late 2014, Grof Transpersonal Training released its latest online series from consciousness explorer and teacher Stanislav Grof. The first introductory 2 hour presentation is free for download
Towards the end of this webcast during a question and answer part, the question of good therapeutic modalities came up. Stan noted that (paraphrasing) accessing the trauma in peoples unconscious cannot be be done with any amount of talk therapy, and that it is required that the person must regress to that traumatic experience. From that direct experience perspective they must be allowed to receive the support required to allow the persons inner healing mechanisms to reprocess and integrate the experience.
Stan noted in reply to a Brazilian mans question that various studies using psychedelics are taking place around the world, picking up on research cut off in the 60s (due to the war on drugs). He went on to note that a legal modality of accessing these domains of experience is by using Ayahuasca, as Ayahuasca is and has for thousands of years been a religious sacrament.
It was also noted that Freud believed depression was anger turned in on the self, using transpersonal psychology approaches makes for an interesting opportunity for treating such states of mind .