Effects of a Psychedelic, Tropical Tea, Ayahuasca, on the Electroencephalographic (EEG) Activity of the Human Brain During a Shamanistic Ritual
By Erik Hoffmann (e_hoffmann@vip.cybercity.dk), Jan M. Keppel Hesselink and Yatra-W.M. da Silveira Barbosa

link: http://www.maps.org/news-letters/v11n1/11125hof.html