Catégorie : Substances psychédéliques et therapeutique

Effective connectivity changes in LSD-induced altered states of consciousness in humans, K. Preller et al., 2019

Effective connectivity changes in LSD-induced altered states of consciousness in humans Katrin H. Preller, Adeel Razib, Peter Zeidman, Philipp Stämpflif, Karl J. Friston, and Franz X. Vollenweider Proceedings of the National Academy of Sciences ,· January 2019 DOI: 10.1073/pnas.1815129116 Abstract : Psychedelics exert unique effects on human consciousness. The thalamic filter model suggests that core effects of psychedelics may result from gating deficits, based on a disintegration of information processing within cortico–striato–thalamo-cortical (CSTC) feedback loops. To test this hypothesis, we characterized changes in directed (effective) connectivity between selected CTSC regions after acute administration of lysergic acid diethylamide (LSD), and after pretreatment with Ketanserin (a selective serotonin [...]

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Classic psychedelic use is associated with reduced psychological distress and suicidality in the United States adult population, P.S. Hendricks et al., 2015

Classic psychedelic use is associated with reduced psychological distress and suicidality in the United States adult population Peter S Hendricks, Christopher B Thorne, C Brendan Clark, David W Coombs, and Matthew W Johnson Journal of Psychopharmacology · January 2015 DOI: 10.1177/0269881114565653 ·   Abstract : Mental health problems are endemic across the globe, and suicide, a strong corollary of poor mental health, is a leading cause of death. Classic psychedelic use may occasion lasting improvements in mental health, but the effects of classic psychedelic use on suicidality are unknown. We evaluated the relationships of classic psychedelic use with psychological distress and suicidality among over 190,000 USA [...]

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Reducing the risks of drug use: The case for set and setting, P. Dalgarno, D. Shewan, 2005

Reducing the risks of drug use: The case for set and setting PHIL DALGARNO & DAVID SHEWAN Addiction Research and Theory,  2005, 13, 3, 259–265   Abstract : The central proposition of this article is that if people are thoughtful, well-prepared and aware of the means and best environments for using a particular drug, then the risks associated with the use of a particular drug – any drug – can be minimal. The types of drugs discussed in this context focus on those assumed to be the most ‘addictive’ – heroin and cocaine – to those less well-known but potentially more hazardous to use without [...]

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Ceremonial ‘Plant Medicine’ use and its relationship to recreational drug use : an exploratory study, C. Dorsen et al., 2018

Ceremonial ‘Plant Medicine’ use and its relationship to recreational drug use : an exploratory study Caroline Dorsen, Joseph Palamar and Michele G. Shedlin Addiction Research & Theory, 2018 https://doi.org/10.1080/16066359.2018.1455187   ABSTRACT Background : The ceremonial use of psychoactive/hallucinogenic plant based drugs, such as ayahuasca, psilocybin and others, is a growing trend in the United States (US) and globally. To date, there has been little research documenting how many people are using psychoactive substances in this context, who the users are, what benefits/risks exist in the use of these drugs and the relationship between ceremonial drug use and recreational drug use. In this paper we describe a [...]

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Cultural Neurophenomenology of Psychedelic Thought : Guiding the “Unconstrained” Mind Through Ritual Context, Michael LIFSHITZ et al., 2018

Cultural Neurophenomenology of Psychedelic Thought: Guiding the “Unconstrained” Mind Through Ritual Context Michael LIFSHITZ, Eli SHEINER, and Laurence J. KIRMAYER The Oxford Handbook of Spontaneous Thought : Mind-Wandering, Creativity, and Dreaming Edited by Kalina Christoff and Kieran C.R. Fox, avril 2018   Abstract : This chapter explores psychedelics as catalysts of spontaneous thought. Classic serotonergic psychedelics such as psilocybin, LSD, and ayahuasca can induce potent alterations in cognition and perception. The chapter reviews research on these substances through the lens of cultural neurophenomenology, which aims to trace how neurobiology and sociocultural factors interact to shape experience. After a decades-long hiatus, the scientific study of psychedelics is rediscovering [...]

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