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LSD, mescaline, and psilocybin cause their effects by initially disrupting the interaction of nerve cells and the neurotransmitter serotonin. [67] It is distributed throughout the brain and spinal cord, where the serotonin system is involved with controlling of the behavioral, perceptual, and regulatory systems.
LSD therapist Stanislav Grof noted an HPPD phenomenon in his book LSD Psychotherapy from 1978, which noted that "[l]ong after the pharmacological effect of the drug has subsided, the patient may still report anomalies in color-perception, blurred vision, after-images, spontaneous imagery, alterations in body image, intensification of hearing ...
Lysergic acid diethylamide, or LSD, activates serotonin receptors (the amine transmitter of nerve urges) in brain matter. LSD acts on certain serotonin receptors, and its effects are most prominent in the cerebral cortex, an area involved in attitude, thought, and insight, which obtains sensory signs from all parts of the body. LSD's main ...
addictive drug – psychoactive substances that with repeated use are associated with significantly higher rates of substance use disorders, due in large part to the drug's effect on brain reward systems; dependence – an adaptive state associated with a withdrawal syndrome upon cessation of repeated exposure to a stimulus (e.g., drug intake)
[15] [184] [145] [98] In addition, there is cross-tolerance with the hallucinogenic effects of other psychedelics such as LSD. [15] [184] [145] [98] Psilocybin produces downregulation of the serotonin 5-HT 2A receptor in the brain in animals, and this effect is thought to be responsible for the development of tolerance to its psychedelic effects.
Mescaline, also known as mescalin or mezcalin, [8] and in chemical terms 3,4,5-trimethoxyphenethylamine, is a naturally occurring psychedelic protoalkaloid of the substituted phenethylamine class, known for its hallucinogenic effects comparable to those of LSD and psilocybin.
Among the unexpected findings were psilocybin and psilocin, the two active and illegal components of psychedelic mushrooms
One effect of 5-HT 2A receptor activation is a reduction in intraocular pressure, and so 5-HT 2A agonists can be useful for the treatment of glaucoma. This has led to the development of compounds such as AL-34662 that are hoped to reduce pressure inside the eyes but without crossing the blood–brain barrier and producing hallucinogenic side ...