Breema description on wikipedia
Jeremy Narby, Phd., is an anthropologist and author. While doing work cataloging indigenous uses of rainforest resources to help combat ecological destruction, he asked one of his guides how they knew so much about the plants around them. Narby was informed that the plants themselves tell people how to use them, particularly through the drinking of ayahuasca, an indigenous hallucinogen
Since then, Narby has written three books, as well as sponsored an expedition to the rainforest for biologists and other scientists to examine indigenous knowledge systems and the utility of Ayahuasca in gaining knowledge. Since 1989 he has been working for Nouvelle Planète and has spent several years living with the Ashaninca in the Peruvian Amazon.
Kundalini on the Wikipedia