Somewhat related you may want to check out the works of Manvir Singh [1]. He is an anthropologist who has done extensive work in Shamanism, even authored a book

Somewhat related you may want to check out the works of Manvir Singh [1]. He is an anthropologist who has done extensive work in Shamanism, even authored a book. A necessary condition to be a shaman is to enter altered sensory state and Shamanism is prevalent among indigenous peoples across the world. [1] https://www.manvir.org/ https://www.manvir.org/