Roland R Griffiths

Professor

1969 …2020

Research output per year

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Research Output

2020

Emotions and brain function are altered up to one month after a single high dose of psilocybin

Barrett, F. S., Doss, M. K., Sepeda, N. D., Pekar, J. J. & Griffiths, R. R., Dec 1 2020, In : Scientific reports. 10, 1, 2214.

Research output: Contribution to journalArticle

Open Access

Persisting Reductions in Cannabis, Opioid, and Stimulant Misuse After Naturalistic Psychedelic Use: An Online Survey

Garcia-Romeu, A., Davis, A. K., Erowid, E., Erowid, F., Griffiths, R. R. & Johnson, M. W., Jan 22 2020, In : Frontiers in Psychiatry. 10, 955.

Research output: Contribution to journalArticle

Open Access
2019

5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT) used in a naturalistic group setting is associated with unintended improvements in depression and anxiety

Davis, A. K., So, S., Lancelotta, R., Barsuglia, J. P. & Griffiths, R. R., Mar 4 2019, In : American Journal of Drug and Alcohol Abuse. 45, 2, p. 161-169 9 p.

Research output: Contribution to journalArticle

A randomized controlled trial of a manual-only treatment for reduction and cessation of problematic caffeine use

Sweeney, M., Meredith, S. E., Juliano, L. M., Evatt, D. P. & Griffiths, R. R., Feb 1 2019, In : Drug and Alcohol Dependence. 195, p. 45-51 7 p.

Research output: Contribution to journalArticle

Cessation and reduction in alcohol consumption and misuse after psychedelic use

Garcia-Romeu, A., Davis, A. K., Erowid, F., Erowid, E., Griffiths, R. R. & Johnson, M. W., Jan 1 2019, In : Journal of Psychopharmacology.

Research output: Contribution to journalArticle

Open Access
2018

Classic hallucinogens and mystical experiences: Phenomenology and neural correlates

Barrett, F. & Griffiths, R. R., Jan 1 2018, Current Topics in Behavioral Neurosciences. Springer Verlag, p. 393-430 38 p. (Current Topics in Behavioral Neurosciences; vol. 36).

Research output: Chapter in Book/Report/Conference proceedingChapter

Double-blind comparison of the two hallucinogens psilocybin and dextromethorphan: effects on cognition

Barrett, F., Carbonaro, T. M., Hurwitz, E., Johnson, M. W. & Griffiths, R. R., Jan 1 2018, (Accepted/In press) In : Psychopharmacology.

Research output: Contribution to journalArticle

Intensity of mystical experiences occasioned by 5-MeO-DMT and comparison with a prior psilocybin study

Barsuglia, J., Davis, A. K., Palmer, R., Lancelotta, R., Windham-Herman, A. M., Peterson, K., Polanco, M., Grant, R. & Griffiths, R. R., Dec 6 2018, In : Frontiers in Psychology. 9, DEC, 2459.

Research output: Contribution to journalArticle

Psychedelic therapy for smoking cessation: Qualitative analysis of participant accounts

Noorani, T., Garcia-Romeu, A., Swift, T. C., Griffiths, R. R. & Johnson, M. W., Jul 1 2018, In : Journal of Psychopharmacology. 32, 7, p. 756-769 14 p.

Research output: Contribution to journalArticle

The abuse potential of medical psilocybin according to the 8 factors of the Controlled Substances Act

Johnson, M. W., Griffiths, R. R., Hendricks, P. S. & Henningfield, J. E., Nov 1 2018, In : Neuropharmacology. 142, p. 143-166 24 p.

Research output: Contribution to journalReview article

2017

An online survey of tobacco smoking cessation associated with naturalistic psychedelic use

Johnson, M. W., Garcia-Romeu, A., Johnson, P. S. & Griffiths, R. R., Jul 1 2017, In : Journal of Psychopharmacology. 31, 7, p. 841-850 10 p.

Research output: Contribution to journalReview article

Double-blind comparison of the two hallucinogens psilocybin and dextromethorphan: similarities and differences in subjective experiences

Carbonaro, T. M., Johnson, M. W., Hurwitz, E. & Griffiths, R. R., Nov 7 2017, (Accepted/In press) In : Psychopharmacology. p. 1-14 14 p.

Research output: Contribution to journalArticle

Effects of caffeine on alcohol reinforcement: beverage choice, self-administration, and subjective ratings

Sweeney, M., Meredith, S. E., Evatt, D. P. & Griffiths, R. R., Mar 1 2017, In : Psychopharmacology. 234, 5, p. 877-888 12 p.

Research output: Contribution to journalArticle

Potential Therapeutic Effects of Psilocybin

Johnson, M. W. & Griffiths, R. R., Jul 1 2017, In : Neurotherapeutics. 14, 3, p. 734-740 7 p.

Research output: Contribution to journalReview article

Qualitative and quantitative features of music reported to support peak mystical experiences during psychedelic therapy sessions

Barrett, F., Robbins, H., Smooke, D., Brown, J. L. & Griffiths, R. R., Jul 25 2017, In : Frontiers in Physiology. 8, JUL, 1238.

Research output: Contribution to journalArticle

2016

A brief manualized treatment for problematic caffeine use: A randomized control trial

Evatt, D. P., Juliano, L. M. & Griffiths, R. R., Feb 1 2016, In : Journal of Consulting and Clinical Psychology. 84, 2, p. 113-121 9 p.

Research output: Contribution to journalArticle

Long-term follow-up of psilocybin-facilitated smoking cessation

Johnson, M. W., Garcia-Romeu, A. & Griffiths, R. R., Jul 23 2016, (Accepted/In press) In : American Journal of Drug and Alcohol Abuse. p. 1-6 6 p.

Research output: Contribution to journalArticle

Naltrexone but Not Ketanserin Antagonizes the Subjective, Cardiovascular, and Neuroendocrine Effects of Salvinorin-A in Humans

Maqueda, A. E., Valle, M., Addy, P. H., Antonijoan, R. M., Puntes, M., Coimbra, J., Ballester, M. R., Garrido, M., González, M., Claramunt, J., Barker, S., Lomnicka, I., Waguespack, M., Johnson, M. W., Griffiths, R. R. & Riba, J., Jul 1 2016, In : The international journal of neuropsychopharmacology. 19, 7

Research output: Contribution to journalArticle

Psilocybin produces substantial and sustained decreases in depression and anxiety in patients with life-threatening cancer: A randomized double-blind trial

Griffiths, R. R., Johnson, M. W., Carducci, M. A., Umbricht, A., Richards, W. A., Richards, B. D., Cosimano, M. P. & Klinedinst, M. A., Dec 1 2016, In : Journal of Psychopharmacology. 30, 12, p. 1181-1197 17 p.

Research output: Contribution to journalArticle

Survey study of challenging experiences after ingesting psilocybin mushrooms: Acute and enduring positive and negative consequences

Carbonaro, T. M., Bradstreet, M. P., Barrett, F., MacLean, K. A., Jesse, R., Johnson, M. W. & Griffiths, R. R., Dec 1 2016, In : Journal of Psychopharmacology. 30, 12, p. 1268-1278 11 p.

Research output: Contribution to journalArticle

Time course of pharmacokinetic and hormonal effects of inhaled high-dose salvinorin A in humans

Johnson, M. W., MacLean, K. A., Caspers, M. J., Prisinzano, T. E. & Griffiths, R. R., Apr 1 2016, In : Journal of Psychopharmacology. 30, 4, p. 323-329 7 p.

Research output: Contribution to journalArticle

2015

Inhaled vs. oral alprazolam: Subjective, behavioral and cognitive effects, and modestly increased abuse potential

Reissig, C. J., Harrison, J. A., Carter, L. P. & Griffiths, R. R., Jan 2015, In : Psychopharmacology. 232, 5, p. 871-883 13 p.

Research output: Contribution to journalArticle

Nicotine reinforcement in never-smokers

Duke, A. N., Johnson, M. W., Reissig, C. J. & Griffiths, R. R., Dec 1 2015, In : Psychopharmacology. 232, 23, p. 4243-4252 10 p.

Research output: Contribution to journalArticle

Psilocybin, psychological distress, and suicidality

Hendricks, P. S., Johnson, M. W. & Griffiths, R. R., Sep 23 2015, In : Journal of Psychopharmacology. 29, 9, p. 1041-1043 3 p.

Research output: Contribution to journalLetter

Salvinorin-A induces intense dissociative effects, blocking external sensory perception and modulating interoception and sense of body ownership in humans

Maqueda, A. E., Valle, M., Addy, P. H., Antonijoan, R. M., Puntes, M., Coimbra, J., Ballester, M. R., Garrido, M., González, M., Claramunt, J., Barker, S., Johnson, M. W., Griffiths, R. R. & Riba, J., Jan 1 2015, In : International Journal of Neuropsychopharmacology. 18, 12, p. 1-14 14 p.

Research output: Contribution to journalArticle

2014

Pilot study of the 5-HT2AR agonist psilocybin in the treatment of tobacco addiction

Johnson, M. W., Garcia-Romeu, A., Cosimano, M. P. & Griffiths, R. R., 2014, In : Journal of Psychopharmacology. 28, 11, p. 983-992 10 p.

Research output: Contribution to journalArticle

The pharmacology of caffeine

Juliano, L. M., Ferré, S. & Griffiths, R. R., May 14 2014, The ASAM Principles of Addiction Medicine: Fifth Edition. Wolters Kluwer Health Adis (ESP)

Research output: Chapter in Book/Report/Conference proceedingChapter

2013

Acute cognitive effects of high doses of dextromethorphan relative to triazolam in humans

Carter, L. P., Reissig, C. J., Johnson, M. W., Klinedinst, M. A., Griffiths, R. R. & Mintzer, M. Z., Jan 1 2013, In : Drug and alcohol dependence. 128, 3, p. 206-213 8 p.

Research output: Contribution to journalArticle

Cognitive effects of intramuscular ketamine and oral triazolam in healthy volunteers

Carter, L. P., Kleykamp, B. A., Griffiths, R. R. & Mintzer, M. Z., Mar 1 2013, In : Psychopharmacology. 226, 1, p. 53-63 11 p.

Research output: Contribution to journalArticle

Comparative abuse liability of GHB and ethanol in humans

Johnson, M. W. & Griffiths, R. R., Apr 2013, In : Experimental and clinical psychopharmacology. 21, 2, p. 112-123 12 p.

Research output: Contribution to journalArticle

Corrigendum to Acute cognitive effects of high doses of dextromethorphan relative to triazolam in humans [Drug Alcohol Depend. 128 (2013) 206-213]

Carter, L. P., Reissig, C. J., Johnson, M. W., Klinedinst, M. A., Griffiths, R. R. & Mintzer, M. Z., Nov 1 2013, In : Drug and alcohol dependence. 133, 1, 1 p.

Research output: Contribution to journalComment/debate

Dose-related effects of salvinorin A in humans: Dissociative, hallucinogenic, and memory effects

MacLean, K. A., Johnson, M. W., Reissig, C. J., Prisinzano, T. E. & Griffiths, R. R., Mar 1 2013, In : Psychopharmacology. 226, 2, p. 381-392 12 p.

Research output: Contribution to journalArticle

Erratum: High doses of dextromethorphan, an NMDA antagonist, produce effects similar to classic hallucinogens (Psychopharmacology DOI 10.1007/s00213-012-2680-6)

Reissig, C. J., Carter, L. P., Johnson, M. W., Mintzer, M. Z., Klinedinst, M. A. & Griffiths, R. R., Aug 1 2013, In : Psychopharmacology. 228, 3, 1 p.

Research output: Contribution to journalComment/debate

LC-MS/MS quantification of salvinorin A from biological fluids

Caspers, M. J., Williams, T. D., Lovell, K. M., Lozama, A., Butelman, E. R., Kreek, M. J., Johnson, M., Griffiths, R., MacLean, K. & Prisinzano, T. E., Dec 2 2013, In : Analytical Methods. 5, 24, p. 7042-7048 7 p.

Research output: Contribution to journalArticle

Use of the classic hallucinogen psilocybin for treatment of existential distress associated with cancer

Grob, C. S., Bossis, A. P. & Griffiths, R. R., Mar 1 2013, Psychological Aspects of Cancer: A Guide to Emotional and Psychological Consequences of Cancer, Their Causes and Their Management. Springer US, Vol. 9781461448662. p. 291-308 18 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

2012

Caffeine

Evatt, D. P. & Griffiths, R. R., Jan 1 2012, Encyclopedia of Human Nutrition. Elsevier Inc., Vol. 1-4. p. 221-227 7 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Characterization of individuals seeking treatment for caffeine dependence

Juliano, L. M., Evatt, D. P., Richards, B. D. & Griffiths, R. R., Dec 1 2012, In : Psychology of Addictive Behaviors. 26, 4, p. 948-954 7 p.

Research output: Contribution to journalArticle

High doses of dextromethorphan, an NMDA antagonist, produce effects similar to classic hallucinogens

Reissig, C. J., Carter, L. P., Johnson, M. W., Mintzer, M. Z., Klinedinst, M. A. & Griffiths, R. R., Sep 2012, In : Psychopharmacology. 223, 1, p. 1-15 15 p.

Research output: Contribution to journalReview article