Effects of external stimulation on psychedelic state neurodynamics Pedro A.M. Mediano, Fernando E. Rosas, Christopher Timmermann, Leor Roseman, David J. Nutt, Amanda Feilding, Mendel Kaelen, Morten L. Kringelbach, Adam B. Barretti, Anil K. Seth, Suresh Muthukumaraswamy, Daniel Bor, and Robin L. Carhart-Harris bioRxiv preprint, 2020 doi : 10.1101/2020.11.01.356071 Abstract Recent findings have shown that psychedelics reliably enhance brain entropy (understood as neural signal diversity), and this effect has been associated with both acute and long-term psychological outcomes such as personality changes. These findings are particularly intriguing given that a decrease of brain entropy is a robust indicator of loss of consciousness (e.g. from wakefulness to [...]
Lire la suiteLSD Increases Primary Process Thinking via Serotonin 2A Receptor Activation Rainer Kraehenmann, Dan Pokorny, Helena Aicher, Katrin H. Preller, Thomas Pokorny, Oliver G. Bosch, Erich Seifritz and Franz X. Vollenweider Frontiers in Pharmacology, 2017, Volume 8, Article 814, 1-9. Doi : 10.3389/fphar.2017.00814 Rationale : Stimulation of serotonin 2A (5-HT2A) receptors by lysergic acid diethylamide (LSD) and related compounds such as psilocybin has previously been shown to increase primary process thinking – an ontologically and evolutionary early, implicit, associative, and automatic mode of thinking which is typically occurring during altered states of consciousness such as dreaming. However, it is still largely unknown whether LSD induces [...]
Lire la suiteMDMA-Induced Dissociative State not Mediated by the 5-HT2A Receptor Drew J. Puxty, Johannes G. Ramaekers, Rafael de la Torre, Magí Farré, Neus Pizarro, Mitona Pujadas and Kim P. C. Kuypers Frontiers in Pharmacology, 2017, Volume 8, Article 455 Doi : 10.3389/fphar.2017.00455 Previous research has shown that a single dose of MDMA induce a dissociative state, by elevating feelings of depersonalization and derealization. Typically, it is assumed that action on the 5-HT2A receptor is the mechanism underlying these psychedelic experiences. In addition, other studies have shown associations between dissociative states and biological parameters (heart rate, cortisol), which are elevated by MDMA. In order to investigate [...]
Lire la suiteSalvia divinorum : from recreational hallucinogenic use to analgesic and anti-inflammatory action Ulises Coffeen, Francisco Pellicer Journal of Pain Research, 2019, Volume 12, 1069-1076 DOI: 10.2147/JPR.S188619 Abstract : Salvia divinorum is a herbal plant native to the southwest region of Mexico. Traditional preparations of this plant have been used in illness treatments that converge with inflammatory conditions and pain. Currently, S. divinorum extracts have become popular in several countries as a recreational drug due to its hallucinogenic effects. Its main active component is a diterpene named salvinorin A (SA), a potent naturally occurring hallucinogen with a great affinity to the κ opioid receptors and with [...]
Lire la suiteIbogaine : A Novel Anti-Addictive Compound. A Comprehensive Literature Review Jonathan Freedlander Journal of Drug Education and Awareness, 2003 https://www.researchgate.net/publication/287670047_Ibogaine_A_novel_anti-addictive_compound Introduction and History Ibogaine is a naturally occurring indole alkaloid, found in a variety of African shrubs of the Tabernathe genus (Obach, Pablo, and Mash, 1998). The root of the Tabernanthe iboga plant (also known as eboga) is the most frequently cited source of ibogaine, and this plant contains 11 other known psychoactive constituents (Popik, and Skolnick, 1999). Chemically, ibogaine is classified as a tryptamine, being a rigid analogue of melatonin, and is structurally similar to harmaline, another natural alkaloid and psychedelic (Xu et al, [...]
Lire la suitePharmacology of Consciousness or Pharmacology of Spirituality ? A Historical Review of Psychedelic Clinical Studies Ismael Apud The Journal of Transpersonal Psychology, 2016, Vol. 48, No. 2, 150-167. ABSTRACT: In the second half of the twentieth century, when psychopharmacology was not developed as we know it today and psychoanalysis was an influential school, various psychiatrists began to develop a ‘pharmacology of consciousness,’ and became interested in hallucinogens as new paths for accessing the unconscious. However, with the psychedelic model, the pharmacology of consciousness turned also into a ‘pharmacology of spirituality,’ focused on the use of spiritual experiences as catalyzers of psychological change. This article [...]
Lire la suitePowerful substances in tiny amounts: Exploring the practice of microdosing psychedelic drugs Petter Grahl Johnstad Working Paper · December 2017 Nordic Studies on Alcohol and Drugs, 2018, Vol. 35(1) 39–51. Doi : 10.1177/1455072517753339 This article presents an explorative study of microdosing practices with psychedelic drugs. A microdose is defined as a sub-perceptual dose, commonly about one tenth of an ordinary recreational dose, which gives no alteration of consciousness or feeling of intoxication. Respondents (n = 17) were recruited at several Internet fora for individual interviews mediated via private messaging. Every participant was male, and the median respondent was in his 30s with a stable job [...]
Lire la suiteA single inhalation of vapor from dried toad secretion containing 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT) in a naturalistic setting is related to sustained enhancement of satisfaction with life, mindfulness-related capacities, and a decrement of psychopathological symptoms M. V. Uthaug, R. Lancelotta, K. van Oorsouw, K. P. C. Kuypers, N. Mason, J. Rak, A. Šuláková, R. Jurok, M. Maryška, M. Kuchař, T. Páleníček, J. Riba, J. G. Ramaekers Psychopharmacology, 2019 https://doi.org/10.1007/s00213-019-05236-w Abstract Background : 5-methoxy-N,N-dimethyltryptamine (hereinafter referred to as 5-MeO-DMT) is a psychedelic substance found in the secretion from the parotoid glands of the Bufo alvarius toad. Inhalation of vapor from toad secretion containing 5-MeO-DMT has become popular in [...]
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