Siberia is regarded as the “locus classicus” of shamanism it is inhabited by many different ethnic groups. Many of its Uralic, Altaic, and Paleosiberian peoples observe shamanistic practices even in modern times. Many classical ethnographic sources of “shamanism” were recorded among Siberian peoples. Shamanism is based on the premise that the visible world is pervaded by invisible forces or spirits that affect the lives of the living. As a psychopomp, the shaman may accompany the incarnating soul of a newborn baby, or inversely, the departing soul of the newly-dead (also healing, leading a sacrifice, fortune-telling). The beating of the drum allows the shaman to achieve an altered state of consciousness or to travel on a journey. The drum is for example referred to as, “‘horse’ or ‘rainbow-bridge’ between the physical and spiritual worlds”. The journey mentioned is one in which the shaman establishes a connection with one or two of the spirit worlds. With the beating of the drum come neurophysiological effects. Much fascination surround the role that the acoustics of the drum play to the shaman. There are two different worlds, the upper and the lower. In the upper world, images such as “climbing a mountain, tree, cliff, rainbow, or ladder; ascending into the sky on smoke; flying on an animal, carpet, or broom and meeting a teacher or guide”, are typically seen. The lower world consists of images including, “entering into the earth through a cave, hollow tree stump, a water hole, a tunnel, or a tube”.