Topics: History of Goa - Wikipedia
Shamanism ( / ˈ ʃ ɑː m ə n / SHAH -men or / ˈ ʃ eɪ m ə n / SHAY -mən ) is a practice that involves a practitioner reaching altered states of consciousness in order to perceive and interact with a spirit world and channel these transcendental energies into this world. 
The word "shaman" probably originates from the Evenki word " šamán, " most likely from the southwestern dialect spoken by the Sym Evenki peoples.  The Tungusic term was subsequently adopted by Russians interacting with the indigenous peoples in Siberia. It is found in the memoirs of the exiled Russian churchman Avvakum. 
The word was brought to Western Europe in the late 17th century by the Dutch traveler Nicolaes Witsen , who reported his stay and journeys among the Tungusic and Samoyedic-speaking indigenous peoples of Siberia in his book Noord en Oost Tataryen (1692).  Adam Brand , a merchant from Lübeck, published in 1698 his account of a Russian embassy to China; a translation of his book, published the same year, introduced the word shaman to English speakers.