Subjective time under altered states of consciousness in ayahuasca users in shamanistic rituals involving music
Brazilian Journal of Medical and Biological Research June 20, 2020 A.p.s. Campagnoli, L.a.s. Pereira, José Lino Oliveira Bueno 11 citations
Ayahuasca, a hallucinogenic substance, alters the subjective experience of time and impairs perception of the passage of time during stimuli longer than two to three seconds. In a double-blind study with nine healthy volunteers experienced in shamanistic rituals, participants ingested low or experimental doses of ayahuasca and performed a task reproducing 20-second musical stimuli. Without ayahuasca, temporal reproduction averaged 16.33 to 16.52 seconds. After ayahuasca, temporal distortion was minor, with means of 17.91 seconds for control and 18.38 seconds for experimental doses. These results show less temporal distortion with ayahuasca, contrasting with other hallucinogen studies.