Investigators: Dr. Micheal Hessellink (Holland), Yatra da Silveira Barbosa (Brazil), Dr. Erik Hofmann (Denmark). Co-investigators are: Dr. Glacos Brito and Dr. Dartiu Xavier da Silveira both from Brazil.
Sao Paulo, Brazil
The protocol has been completed and an article reporting on the results is published in the MAPS Bulletin, Spring 2001.
- Hoffmann E, Hesselink JMK, da Silveira-Barbosa YWM. Effects of a Psychedelic, Tropical Tea, Ayahuasca, on the Electroencephalographic (EEG) Activity of the Human Brain During a Shamanistic Ritual. MAPS Bulletin 2001 Spring;11(1):25-31. [PDF version]