EEG of Long-Term Ayahuasca Drinkers vs. Matched Controls

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.