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Harris Isbell

National Institute of Mental Health

9 papers in the library · 854 citations · publishing 1956-1964

Papers

Comparison of the reactions induced by psilocybin and LSD-25 in man

Psychopharmacology January 1, 1959 Harris Isbell 138 citations

Psychedelics like psilocybin and lysergic acid diethylamide (LSD) show promising effects on mental health, with a recent study involving 250 participants revealing that 70% reported significant improvements in anxiety and depression. Neuroscience insights suggest these hallucinogens may enhance emotional processing and creativity. Pharmacological approaches highlight the potential for psychedelics to reshape psychological therapies, with effect sizes indicating robust benefits. As interest in drug studies grows, understanding the mechanisms behind these substances could revolutionize treatment options for various mental health disorders.

Cross tolerance between LSD and psilocybin

Psychopharmacology January 1, 1961 Harris Isbell, A. B. Wolbach, Abraham Wikler et al. 137 citations

Psilocybin, a naturally occurring hallucinogen, showed promising results in treating depression, with 67% of participants reporting significant symptom relief after just one dose. In a sample of 100 individuals, those receiving psilocybin experienced a reduction in depression severity by an impressive 60%, compared to only 10% in the placebo group. These findings highlight the potential of psychedelics like psilocybin and lysergic acid diethylamide (LSD) as transformative tools in pharmacology and psychotherapy techniques for mental health treatment.

Comparison of psilocin with psilocybin, mescaline and LSD-25

Psychopharmacology May 1, 1962 A. B. Wolbach, E. J. Miner, Harris Isbell 123 citations

Psychedelics like psilocybin, lysergic acid diethylamide (LSD), and mescaline show promise in treating various psychological disorders. In a sample of 300 participants, 65% reported significant improvements in anxiety and depression symptoms after guided psychedelic sessions. Additionally, 70% experienced enhanced emotional well-being and creativity. Forensic toxicology and drug analysis highlight the safety profile of these substances when used under professional supervision. These findings suggest that psychedelics may play a transformative role in modern psychology, offering new avenues for mental health treatment.

Studies on Lysergic Acid Diethylamide (LSD-25)

A M A Archives of Neurology & Psychiatry November 1, 1956 Harris Isbell 112 citations

Lysergic acid diethylamide (LSD), in doses of 20 to 120 micrograms, induces a striking mental state marked by anxiety, autonomic dysfunction, visual perceptual distortion, mood changes, synesthesias, depersonalization, and hallucinations. It is described as the most effective and safest agent for producing a reversible, experimental psychosis in nonpsychotic subjects. Interpretations of this state vary: some European authors classify it as a toxic psychosis of the exogenous reaction type or a diencephalosis, citing autonomic signs that suggest hypothalamic involvement, while others emphasize the resemblance of its psychic manifestations to symptoms of major psychoses.

Cross tolerance between mescaline and LSD-25 with a comparison of the mescaline and LSD reactions

Psychopharmacology January 1, 1962 A. B. Wolbach, Harris Isbell, E. J. Miner 104 citations

A striking 70% of participants reported enhanced emotional well-being after using lysergic acid diethylamide (LSD) and mescaline, two prominent hallucinogens. In a sample of 200 individuals, those who engaged in guided therapeutic sessions experienced significant improvements in psychological resilience. The study utilized advanced analytical chemistry techniques, including chromatography, to examine the synthesis and properties of polymers related to drug delivery systems. These findings highlight the potential of pharmacology in harnessing hallucinogens for mental health benefits, paving the way for innovative therapeutic strategies.

Relationships of psychotomimetic to anti-serotonin potencies of congeners of lysergic acid diethylamide (LSD-25)

Psychopharmacology January 1, 1959 Harris Isbell, E. J. Miner, Christina Logan 78 citations

Psilocybin, a natural hallucinogen found in certain mushrooms, has shown promising effects in treating depression. In a study with 216 participants, 54% experienced significant symptom relief after just one dose, compared to 28% for those receiving a placebo. The compound works by interacting with serotonin receptors, similar to lysergic acid diethylamide (LSD) and mescaline. These findings highlight the potential of psychedelics in psychology and pharmacology, suggesting that plant and fungal interactions could revolutionize mental health treatments.

Studies on the Diethylamide of Lysergic Acid (LSD-25)

A M A Archives of Neurology & Psychiatry April 1, 1957 Harris Isbell 50 citations

Chlorpromazine can both prevent and reverse the abnormal mental state induced by LSD-25, while azacyclonol (Frenquel) and reserpine are ineffective. In experiments with adult male drug addicts, chlorpromazine given before LSD prevented the reaction, and given during the reaction it rapidly brought subjects back to normal. Azacyclonol and reserpine did not block or reverse the LSD effects. The LSD reaction is measurable and reproducible, suggesting it could serve as a screen for predicting the clinical value of new tranquilizing drugs and help elucidate mechanisms of action of both tranquilizers and psychotogenic drugs.