"Shamanism is a religious practice that involves a practitioner who is believed to interact with a spirit world through altered states of consciousness, such as trance. ...
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The goal of this is usually to direct these spirits or spiritual energies into the physical world, for healing or another purpose.
Beliefs and practices categorized as "shamanic" have attracted the interest of scholars from a variety of disciplines, including anthropologists, archaeologists, historians, religious studies scholars, philosophers and psychologists. Hundreds of books and academic papers on the subject have been produced, with a peer-reviewed academic journal being devoted to the study of shamanism." - (en.wikipedia.org 29.06.2021)