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Edison S. Neves

2 papers in the library · 333 citations · publishing 1996-2005

Papers

Human Psychopharmacology of Hoasca, A Plant Hallucinogen Used in Ritual Context in Brazil

The Journal of Nervous and Mental Disease February 1, 1996 Charles S. Grob, Dennis J. Mckenna, J. C. Callaway et al. 333 citations

Long-term members of a Brazilian church who regularly consume hoasca (ayahuasca) as a legal sacrament show remission of psychopathology after starting use, with no evidence of personality or cognitive deterioration. Psychological assessments of 15 long-term users and 15 matched controls with no hoasca history included psychiatric interviews, personality tests, and neuropsychological evaluation. Users reported high functional status. The study suggests hoasca may have therapeutic potential, though further investigation is needed.

Phytochemical analyses of Banisteriopsis caapi and Psychotria viridis.

Journal of Psychoactive Drugs June 1, 2005 J C Callaway, Glacus S. Brito, Edison S. Neves

Phytochemical analyses of 32 Banisteriopsis caapi and 36 Psychotria viridis samples collected from 22 sites across Brazil revealed wide variation in alkaloid content. All B. caapi samples contained harmine, harmaline, and tetrahydroharmine (THH). Some P. viridis samples had little or no detectable N,N-dimethyltryptamine (DMT). Leaves from one P. viridis plant analyzed over a 24-hour cycle also showed DMT variation.