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Personality, psychopathology, life attitudes and neuropsychological performance among ritual users of ayahuasca: a longitudinal study

Author
Bouso, José Carlos; González, Débora; Fondevila, Sabela; Cutchet, Marta; Fernández, Xavier; Ribeiro Barbosa, Paulo César; Alcázar Córcoles, Miguel Ángeluntranslated; Sena Araújo, Wladimyr; Barbanoj, Manel J.; Fábregas, José María; Riba, Jordi
Entity
UAM. Departamento de Psicología Biológica y de la Salud
Publisher
Public Library of Science
Date
2012
Citation
10.1371/journal.pone.0042421
PLoS ONE 7.8 (2012): e42421
 
 
 
ISSN
1932-6203 (online)
DOI
10.1371/journal.pone.0042421
Editor's Version
http://dx.doi.org/10.1371/journal.pone.0042421
Subjects
Drug Usage; Neuropsychological Assessment; Personality traits; Psychopathology; Well Being; Attitudes; Drugs; Psicología
URI
http://hdl.handle.net/10486/666683
Rights
© 2012 Bouso et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Licencia Creative Commons
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.

Abstract

Ayahuasca is an Amazonian psychoactive plant beverage containing the serotonergic 5-HT2A agonist N,N-dimethyltryptamine (DMT) and monoamine oxidase-inhibiting alkaloids (harmine, harmaline and tetrahydroharmine) that render it orally active. Ayahuasca ingestion is a central feature in several Brazilian syncretic churches that have expanded their activities to urban Brazil, Europe and North America. Members of these groups typically ingest ayahuasca at least twice per month. Prior research has shown that acute ayahuasca increases blood flow in prefrontal and temporal brain regions and that it elicits intense modifications in thought processes, perception and emotion. However, regular ayahuasca use does not seem to induce the pattern of addiction-related problems that characterize drugs of abuse. To study the impact of repeated ayahuasca use on general psychological well-being, mental health and cognition, here we assessed personality, psychopathology, life attitudes and neuropsychological performance in regular ayahuasca users (n = 127) and controls (n = 115) at baseline and 1 year later. Controls were actively participating in non-ayahuasca religions. Users showed higher Reward Dependence and Self-Transcendence and lower Harm Avoidance and Self-Directedness. They scored significantly lower on all psychopathology measures, showed better performance on the Stroop test, the Wisconsin Card Sorting Test and the Letter-Number Sequencing task from the WAIS-III, and better scores on the Frontal Systems Behavior Scale. Analysis of life attitudes showed higher scores on the Spiritual Orientation Inventory, the Purpose in Life Test and the Psychosocial Well-Being test. Despite the lower number of participants available at follow-up, overall differences with controls were maintained one year later. In conclusion, we found no evidence of psychological maladjustment, mental health deterioration or cognitive impairment in the ayahuasca-using group.
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Google™ Scholar:Bouso, José Carlos - González, Débora - Fondevila, Sabela - Cutchet, Marta - Fernández, Xavier - Ribeiro Barbosa, Paulo César - Alcázar Córcoles, Miguel Ángel - Sena Araújo, Wladimyr - Barbanoj, Manel J. - Fábregas, José María - Riba, Jordi

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  • Producción científica en acceso abierto de la UAM [17163]

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