How did American Indian shamans use visions and initiatory trials to gain spiritual power?

Among American Indian peoples, shamanism is a central aspect of religious life, where spiritual power is gained through direct personal experience, either spontaneously or via a voluntary vision quest.1

The Role of Visions and Quests

The vision quest is a fundamental technique for attaining spiritual interaction. It typically involves an individual traveling to an isolated location to engage in prayer while abstaining from food and drink for several days. Some traditions supplement these practices with hallucinogens. During this process, the seeker hopes to encounter a guardian spirit—often an anthropomorphized animal—to receive advice, protection, or a sign. While many individuals might undertake these quests as part of coming-of-age rituals, shamans use these experiences to acquire the specific supernatural power necessary to act as healers and intermediaries between the human and spirit worlds.21

Initiatory Trials

Regardless of how the power is initially obtained, a future shaman must undergo specific initiatory trials. These trials serve to formalize the candidate's status and ensure they are prepared to wield their power for the benefit of the community, such as in healing, communal hunting, or defending the tribe against sorcery.1