Prenatal events and the phenomena of the Birth-Perinatal Matrices identified by Grof are often re-enacted and re-accessed inadvertently during sex, propelling people into altered states similar to those he identified in his psychedelic and holotropic breath work research. Other prenatal research identifies how some prenatal complexes predispose people to altered-state sex, certain kinds of experiences, and certain kinds of love relationships.
Wade, Jenny, "Transcendent Sex and the Prenatal Experience: Acting out the Scripts in Love" (2014). Expanding and Reenchanting the Psyche: The Pioneering Thought of Stanislav Grof. 10.