Psychedelic

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Oversoul by Alex Grey - An example of psychedelic artwork created by the renowned artist known as Alex Grey. This image is a representation of an experience report found within the 1901 book Cosmic Consciousness

Psychedelics are a class of hallucinogens named so because the term is derived from the Greek words ψυχή (psyche, "mind") and δηλείν (delein, "to manifest"). The term means "mind-manifesting" with the implication being that psychedelics can access and develop unused potentials of the human mind.[1] In modern times, psychedelic drugs used in the context of religious, shamanic, or spiritual settings are often referred to as entheogens.[2]

Method of action

This is an infograph hypothesizing the potential methods of action behind serotonergic psychedelics.
The diagram above demonstrates the neural connections associated with sobriety in comparison to being under the influence of psilocybin as demonstrated through the use of MRI scans.[3]
This image shows how, with eyes-closed, much more of the brain contributes to the visual experience under LSD (right image) than under placebo (left image). The magnitude of this effect correlates with participants’ reports of complex, dreamlike visions.[4]

Psychedelics act on serotonin receptors (also referred to as 5-HT receptors) via the way in which they act as full or partial agonists through their structural similarity to the serotonin molecule. DMT, for example, works by simply fitting into and activating serotonin receptors. It has a higher affinity than serotonin itself for the receptors, therefore preventing serotonin from binding to the receptors by competing with it.

While the method of action behind psychedelics is not fully understood, serotonergic psychedelics are known to show affinities for various 5-HT receptors in different ways and levels and may be classified by their activity at different 5-HT sub-sites, such as 5-HT1A, 5-HT1B, 5-HT2A, etc. Many serotonergic psychedelics (such as the tryptamines) have very strong structural similarities to serotonin itself which partially explains the affinity for certain 5-HT sites. It is almost unanimously agreed that serotonergic psychedelics produce their effects by acting as strong partial agonists at the 5-HT2A receptors, with a few exceptions acting as full agonists (such as 25I-NBOMe).

Subjective effects

The effects listed below are based upon the subjective effects index and personal experiences of PsychonautWiki contributors. The listed effects will rarely (if ever) occur all at once, but heavier dosages will increase the chances and are more likely to induce a full range of effects.

Visual effects
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Pharmacological classes

Psychedelic structural comparison diagram.

The classical psychedelics are all classed as serotonergic in nature. This means that they structurally mimic the endogenous neurotransmitter known as serotonin, the neurotransmitter responsible for feelings of well-being and mood regulation.[6] The diagram to the right shows the structural similarities and differences between the differing classes of psychedelics and the serotonin neurotransmitter. The three classes (phenethylamines, lysergamides and tryptamines) all contain the same chemical rings (which have been labelled).

  • A represents the benzene ring, which all three classes contain.
  • B represents the pyrrole ring in both tryptamines and lysergamides.
  • A and B together form the indole ring.
  • C (cyclohexane) and D are only contained in the lysergamides, possibly contributing to their potency.

Examples

Responsible use

The information below describes and explains various concepts regarding the responsible use of psychedelic compounds. These should be read over and considered before one decides whether or not it will be safe to trip.

Setting
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State of mind
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Physical state
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Trip sitters
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Anchors
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Aborting trips
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See also

References

  1. A. Weil, W. Rosen. (1993), From Chocolate To Morphine:Everything You Need To Know About Mind-Altering Drugs.New York, Houghton Mifflin Company. p. 93
  2. Dictionary - Entheogen | http://dictionary.reference.com/browse/entheogen
  3. What your brain looks like on magic mushrooms | http://www.telegraph.co.uk/news/science/science-news/11207979/What-your-brain-looks-like-on-magic-mushrooms.html
  4. LSD's impact on the brain revealed in groundbreaking images | https://www.theguardian.com/science/2016/apr/11/lsd-impact-brain-revealed-groundbreaking-images
  5. Psychedelics: entering a new age of addiction therapy | http://www.pharmaceutical-journal.com/news-and-analysis/features/psychedelics-entering-a-new-age-of-addiction-therapy/20066899.article#fn_link_1
  6. How to increase serotonin in the human brain without drugs|journal = Rev. Psychiatr. Neurosci.|volume=32|issue=6|pages = 394–99|year = 2007| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2077351/