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O'Brien T

102 indexed publications match this author name.

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Publication history

Exploring the In Vitro Effect of Psilocybin on the Composition and Metabolic Activity of Gut Microbiota in Individuals with Severe AnxietyDrugs and Drug Candidates · 2026-08-12Longitudinal neural and psychological changes following psilocybin under compassion imagery primingFrontiers in Human Neuroscience · 2026-07-22Psilocybin-Assisted Early Palliative Care for Demoralization and Chronic Pain: An Open-Label Pilot Study.medRxiv: the preprint server for health sciences · 2026-07-14Psilocybin restores behavior and 5-HT2A signaling while reducing microglial density after chronic traumatic brain injury in ratsCell Reports Medicine · 2026-07-01The purpose of the psychosocial protocol in the psychedelic-assisted therapy: A scoping review.Journal of psychopharmacology (Oxford, England) · 2026-07-01Acute dose-dependent effects of 4-bromo-2,5-dimethoxyphenethylamine (2C-B) compared with 3,4-methylenedioxymethamphetamine (MDMA) and psilocybin in a double-blind, placebo-controlled study in healthy participantsNeuropsychopharmacology · 2026-07-01Aquahenosis: A non-pharmacological altered state of consciousness induced by Floatation-REST in individuals with anxiety and depressionPsyArXiv · 2026-06-10Psilocybin for psychiatric disorders: History, clinical trials, neuroimaging, and regulationsPsychiatry and Clinical Neurosciences · 2026-06-01Mapping cognitive-behavioral approach in psychedelic-assisted treatment: a systematic review across phases with classic and non-classic psychedelics.European archives of psychiatry and clinical neuroscience · 2026-06-01Psychedelic-induced hypomania and mania: a systematic review and meta-analysis.Molecular psychiatry · 2026-05-29Inaugural year of regulated psilocybin services in Oregon: safety, motivations, and utilizationFrontiers in Psychiatry · 2026-05-13Safety and Efficacy of Psilocybin in the Management of Treatment-Resistant Depression: A Systematic ReviewResearch Square · 2026-05-11The Music for Subanesthetic Infusions of Ketamine randomised clinical trial: ketamine as a psychedelic treatment for highly refractory depression.The British journal of psychiatry: the journal of mental science · 2026-05-01Psilocybin ameliorates neuropathic pain-like behaviour in mice and facilitates gabapentin-mediated analgesiaCommunications Biology · 2026-04-24The efficacy and safety of psilocybin-assisted therapy for major depressive disorder: a meta-analytic review of clinical outcomesMental Wellness · 2026-04-21Breaking the chains of depression: A systematic review and meta-analysis of psilocybin therapyJournal of Affective Disorders · 2026-03-01Delayed psilocybin treatment after repeated mild traumatic brain injury recovers chronic behavioural deficits, reduces microglial density, and enhances hippocampal neurogenesis in ratsResearch Square · 2026-02-23[Clinical application and mechanistic studies of psychedelics for treatment of depression: progress and future challenges].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2026-01-20Aquahenosis: A non-pharmacological altered state of consciousness induced by Floatation-RESTPsyArXiv · 2026-01-15XÂY DỰNG PHƯƠNG PHÁP ĐỊNH LƯỢNG PSILOCIN VÀ PSILOCYBIN TRONG HUYẾT TƯƠNG NGƯỜI BẰNG LC-MS/MSTNU Journal of Science and Technology · 2026-01-13Psychedelic DrugsIntechOpen · 2026-01-01Characteristics of Ongoing Clinical Trials for Cocaine Use Disorder Registered on Global Clinical Trial Databases.Journal of addiction medicine · 2026-01-01A Naturalistic Study on the Combined Neural and Psychological Effects of Psilocybin and Compassion Focused ImagerybioRxiv · 2025-12-22The polypharmacology of psychedelics reveals multiple targets for potential therapeutics.Neuron · 2025-10-01Multianalytical Investigation of Psilocybe cubensis Mushrooms: Physicochemical Characterization and Biological Evaluation of Psilocybin and Psilocin CompoundsACS Omega · 2025-09-30Novel perspectives for glutamatergic strategies, psychedelics and antipsychotic augmentation in Treatment Resistant Depression: A narrative reviewClinical Neuropsychopharmacology and Addiction · 2025-09-24A critical evaluation of psilocybin-assisted therapy protocol components from clinical trial patients, facilitators, and caregivers.Psychotherapy (Chicago, Ill.) · 2025-09-01Psychedelic-Assisted Therapy: Potential Benefits and Challenges in Mental Health Treatment.Medical science monitor: international medical journal of experimental and clinical research · 2025-08-09363. DIFFERENTIAL EFFECTS OF PSILOCYBIN AND LISURIDE ON SEROTONIN AND DOPAMINE NEURONAL ACTIVITY AND BEHAVIORThe international journal of neuropsychopharmacology · 2025-08-01Exploring the Frontiers of Psychedelics: A New Chromatographic Method for Detection and Quantification of Psilocybin and Psilocin in Psilocybe cubensis MushroomsACS Omega · 2025-07-22Chemical Composition and Biological Activities of Mushrooms: Gaps and Perspectives.Pharmaceuticals (Basel, Switzerland) · 2025-07-01Psilocybin-induced modulation of visual salience processingbioRxiv · 2025-05-12Anaesthetic implications of psilocybin and lysergic acid diethylamide: what is old is now new: A narrative review on psychedelics and anaesthesia.European journal of anaesthesiology · 2025-05-01Comprehensive analysis of 42 psilocybin-producing fungal strains reveals metabolite diversity and species-specific clusters.Scientific reports · 2025-04-22Precision Functional Mapping of Psilocybin’s Acute and Persistent Brain EffectsBiological Psychiatry · 2025-04-0913. Safety, Feasibility, and Tolerability of Psilocybin in Older Adults With Amnestic MCI: Preliminary Data From a SV2a PET Imaging StudyBiological Psychiatry · 2025-04-09Extraction Yields of Psilocybin and Psilocin: A Short Review of Current Methods and Their ImplicationsPharmaceuticals · 2025-03-07Investigating novel pharmacological strategies for treatment-resistant depression: focus on new mechanisms and approaches.Expert opinion on drug discovery · 2025-02-03Source Localized Auditory Erp Sensory and Preattentive Correlates of Psilocybin-Induced Ego-Dissolution Related EffectsDrug and Alcohol Dependence · 2025-02-01Comment on: Effect of psilocybin therapy on suicidal ideation, attempts, and deaths in people with psychiatric diagnoses: a systematic review and meta-analysis.Therapeutic advances in psychopharmacology · 2025-01-01Why N,N-dimethyltryptamine matters: unique features and therapeutic potential beyond classical psychedelicsFrontiers in Psychiatry · 2024-11-06The Afterglow Inventory (AGI) - validation of a new instrument for measuring subacute effects of classic serotonergic psychedelicsPsyArXiv · 2024-10-22Licit use of illicit drugs for treating depression: the pill and the process.The Journal of clinical investigation · 2024-06-17THU-285 Lownonpsychedelic dosed of psilocybin for the therapy of MASLDJournal of Hepatology · 2024-05-31Predicting the outcome of psilocybin treatment for depression from baseline fMRI functional connectivity.Journal of affective disorders · 2024-05-15Non-psychedelic doses of psilocybin as a novel therapeutic approach for MASLDDigestive and Liver Disease · 2024-02-01Brazilian Psychedelic Science and the Frontiers of PsychiatryJornal Brasileiro de Psiquiatria · 2024-01-01The association between diverse psychological protocols and the efficacy of psilocybin-assisted therapy for clinical depressive symptoms: a Bayesian meta-analysis.Frontiers in psychiatry · 2024-01-01Acute effects of psilocybin on the dynamics of gaze fixations during visual aesthetic perceptionbioRxiv · 2023-11-01Psilocybin-assisted therapy for depression: A systematic review and dose-response meta-analysis of human studies.European neuropsychopharmacology: the journal of the European College of Neuropsychopharmacology · 2023-11-01Single-Dose Psilocybin Treatment for Major Depressive Disorder: A Randomized Clinical Trial.JAMA · 2023-09-05An Open Label Pragmatic Feasibility Study on a Resilience Focused Community of Practice Program With Psilocybin-assisted Therapy (PaT) for End-of-Life Patients.ClinicalTrials.gov · 2023-07-25The Altered Xperience Project (AXP): Quantitative and Qualitative Data from a Citizen Science Initiative on the Subjective Experience of Altered States of ConsciousnessPsyArXiv · 2023-06-04TMS-EEG and resting-state EEG applied to altered states of consciousness: oscillations, complexity, and phenomenology.iScience · 2023-05-19118. Does Psilocybin Change Synaptic Vesicular Density in the Brains of Patients With Mild Cognitive Impairment?Biological Psychiatry · 2023-04-10Psilocybin to promote synaptogenesis in the brains of patients with mild cognitive impairmentMedical Hypotheses · 2023-04-05Investigating changes in EEG entropy rate in response to psilocybin - a comparison of lempel ziv and state-space entropy rate measuresNeuroscience Applied · 2023-01-01Inconsistencies between national drug policy and professional beliefs about psychoactive drugs among psychiatrists in the United States.The International journal on drug policy · 2022-10-01Natural language signatures of psilocybin microdosing.Psychopharmacology · 2022-09-01Microdosing with psilocybin mushrooms: a double-blind placebo-controlled study.Translational psychiatry · 2022-08-02Phenomenological assessment of psychedelics induced experiences: Translation and validation of the German Challenging Experience Questionnaire (CEQ) and Ego-Dissolution Inventory (EDI).PloS one · 2022-01-01Effects of classic psychedelic drugs on turbulent signatures in brain dynamics.Network neuroscience (Cambridge, Mass.) · 2022-01-01Microevidence for microdosing with psilocybin mushrooms: a double-blind placebo-controlled study of subjective effects, behavior, creativity, perception, cognition, and brain activityZenodo (CERN European Organization for Nuclear Research) · 2021-11-29Use of alternative therapy with Psilocybin in oncologic patients with depression and/or anxiety disorders - integrative reviewResearch Society and Development · 2021-08-19A utilização terapêutica da psilocibina como coadjuvante no tratamento do transtorno depressivo maior: uma revisão narrativa de literatura / The therapeutic use of psilocybin as an adjunct in the treatment of major depressive disorder: a narrative literature reviewBrazilian Journal of Health Review · 2021-05-03Discriminative Stimulus Effects of Substituted Tryptamines in Rats.ACS pharmacology & translational science · 2021-04-09Phenomenological assessment of psychedelic induced experiences: Translation and validation of the German Challenging Experience Questionnaire (CEQ) and Ego-Dissolution Inventory (EDI)PsyArXiv · 2021-04-02Optimal dosing for psilocybin pharmacotherapy: Considering weight-adjusted and fixed dosing approaches.Journal of psychopharmacology (Oxford, England) · 2021-04-01Dose-response relationships of psilocybin-induced subjective experiences in humans.Journal of psychopharmacology (Oxford, England) · 2021-04-01Psychedelics and Health Behavior Change - Journal of Psychopharmacology (in press)PsyArXiv · 2021-03-24Chemical Composition of Traditional and Analog Ayahuasca.Journal of psychoactive drugs · 2021-01-01Human Cortical Serotonin 2A Receptor Occupancy by Psilocybin Measured Using [C]MDL100,907 Dynamic PET and a Resting-State fMRI-Based Brain Parcellation.Frontiers in neuroergonomics · 2021-01-01Immunochemical monitoring of psilocybin and psilocin to identify hallucinogenic mushroomsJournal of Pharmaceutical and Biomedical Analysis · 2020-10-01Subjective features of the psilocybin experience that may account for its self-administration by humans: a double-blind comparison of psilocybin and dextromethorphan.Psychopharmacology · 2020-08-01A SYSTEMATIC REVIEW OF PSILOCYBIN IN THE TREATMENT OF DEPRESSION AND ANXIETYJournal of Affective Disorders · 2019-07-01Double-blind comparison of the two hallucinogens psilocybin and dextromethorphan: effects on cognition.Psychopharmacology · 2018-10-01Psychoactive plant- and mushroom-associated alkaloids from two behavior modifying cicada pathogensbioRxiv · 2018-07-24Double-blind comparison of the two hallucinogens psilocybin and dextromethorphan: similarities and differences in subjective experiences.Psychopharmacology · 2018-02-01The Experience Elicited by Hallucinogens Presents the Highest Similarity to Dreaming within a Large Database of Psychoactive Substance ReportsFrontiers in Neuroscience · 2018-01-21Novel psychotherapeutics - a cautiously optimistic focus on Hallucinogens.Expert review of clinical pharmacology · 2018-01-01[Psychotherapy with Adjuvant use of Serotonergic Psychoactive Substances: Possibilities and Challenges].Fortschritte der Neurologie-Psychiatrie · 2017-07-01Survey study of challenging experiences after ingesting psilocybin mushrooms: Acute and enduring positive and negative consequences.Journal of psychopharmacology (Oxford, England) · 2016-12-01The psychedelic state induced by ayahuasca modulates the activity and connectivity of the default mode network.PloS one · 2015-01-01Homological scaffolds of brain functional networks.Journal of the Royal Society, Interface · 2014-12-06Enhanced repertoire of brain dynamical states during the psychedelic experience.Human brain mapping · 2014-11-01Recreational drug discovery: natural products as lead structures for the synthesis of smart drugs.Natural product reports · 2014-07-01The entropic brain: a theory of conscious states informed by neuroimaging research with psychedelic drugs.Frontiers in human neuroscience · 2014-01-01The discriminative effects of the kappa-opioid hallucinogen salvinorin A in nonhuman primates: dissociation from classic hallucinogen effects.Psychopharmacology · 2010-06-01Direct detection of serum psilocin glucuronide by LC/MS and LC/MS/MS: time-courses of total and free (unconjugated) psilocin concentrations in serum specimens of a “magic mushroom” userForensic Toxicology · 2006-07-01Preparation of Monoclonal Antibodies Reactive to a Hallucinogenic Drug, PsilocinJournal of Health Science · 2004-01-01Optimized glucuronide hydrolysis for the detection of psilocin in human urine samplesJournal of Chromatography B · 2003-11-01ChemInform Abstract: The Chemistry of Indoles. Part 109. Synthetic Studies of Psilocin Analogues Having Either a Formyl Group or Bromine Atom at the 5- or 7-Position.ChemInform · 2002-07-23Synthetic Studies of Psilocin Analogs Having Either a Formyl Group or Bromine Atom at the 5- or 7-Position.Chemical and Pharmaceutical Bulletin · 2002-01-01ChemInform Abstract: Chemistry of Indoles. Part 88. A Five-Step Synthesis of Psilocin from Indole-3-carbaldehyde.ChemInform · 1999-06-08[The morphofunctional changes in the internal organs in the modelling of poisonings by psilocybine-containing mushrooms].Sudebno-meditsinskaia ekspertiza · 1999-01-01[The forensic chemical study of psilocybine-containing fungi].Sudebno-meditsinskaia ekspertiza · 1998-01-01A Five-Step Synthesis of Psilocin from Indole-3-carbaldehydeHETEROCYCLES · 1997-12-31[Poisoning by the hallucinogenic mushroom hikageshibiretake (Psilocybe argentipes)--with special reference to subjective experiences during psilocybin poisoning].Seishin shinkeigaku zasshi = Psychiatria et neurologia Japonica · 1988-01-01Poisoning by hallucinogenic mushroom hikageshibiretake (Psilocybe argentipes K. Yokoyama) indigenous to Japan.The Tohoku journal of experimental medicine · 1986-01-01[Studies on hallucinogens. V. Synthesis of psilocybin].Eisei Shikenjo hokoku. Bulletin of National Institute of Hygienic Sciences · 1974-01-01[Studies on hallucinogens. 3. Synthesis of psilocin (author's transl)].Eisei Shikenjo hokoku. Bulletin of National Institute of Hygienic Sciences · 1973-01-01Quantitative measurement of time contraction induced by psilocybin.Arzneimittel-Forschung · 1968-05-01

Author directory

Robin Carhart-Harris176 publicationsDavid Nutt121 publicationsDavid Erritzøe84 publicationsFranz X. Vollenweider84 publicationsRoland R. Griffiths84 publicationsMatthew W. Johnson69 publicationsKatrin H. Preller64 publicationsFrederick S. Barrett60 publicationsGitte M. Knudsen57 publicationsLeor Roseman55 publicationsJames Rucker48 publicationsAlbert Garcia-Romeu46 publicationsTomáš Páleníček44 publicationsPatrick M. Fisher43 publicationsSandeep M. Nayak43 publicationsDea Siggaard Stenbæk41 publicationsJoshua D. Rosenblat41 publicationsKim P. C. Kuypers41 publicationsNatasha L. Mason38 publicationsPeter S. Hendricks38 publicationsAlan K. Davis36 publicationsChristopher Timmermann33 publicationsDavid Bryce Yaden33 publicationsMatthias E. Liechti33 publicationsMuhammad Ishrat Husain33 publicationsBrice Ozenne32 publicationsJohns Hopkins University31 publicationsGuy M. Goodwin30 publicationsHannes Kettner30 publicationsStephen Ross30 publicationsJohannes G. Ramaekers29 publicationsMichael P. Bogenschutz29 publicationsRoger S. McIntyre29 publicationsDirk Hoffmeister28 publicationsErich Seifritz27 publicationsRobert B. Kargbo27 publicationsRichard J. Zeifman26 publicationsBrian Anderson25 publicationsMartin Korsbak Madsen25 publicationsAllan H. Young24 publicationsCharles D. Nichols24 publicationsDrummond E-Wen McCulloch24 publicationsGabrielle Agin-Liebes24 publicationsJavier González-Maeso24 publicationsMartin Kuchař24 publicationsMorten L. Kringelbach24 publicationsNathan D. Sepeda24 publicationsNatalie Gukasyan23 publicationsPaul Liknaitzky23 publicationsXiaohui Wang23 publicationsFriederike Holze22 publicationsGustavo Deco22 publicationsScott Aaronson22 publicationsBrian S. Barnett21 publicationsBruna Giribaldi21 publicationsOlivia Carter21 publicationsOtto Simonsson21 publicationsRafael G. dos Santos21 publicationsAdam L. Halberstadt20 publicationsAlex Kwan20 publicationsManoj Doss20 publicationsMichael Kometer20 publicationsBenjamin Kelmendi19 publicationsBernard Lerer19 publicationsJacob S. Aday19 publicationsJaime E. C. Hallak19 publicationsJiřı́ Horáček19 publicationsMatthew B. Wall19 publicationsRoland A. Fischer19 publicationsRotem Petranker19 publicationsCharles L. Raison18 publicationsDavid E. Nichols18 publicationsEnzo Tagliazucchi18 publicationsMendel Kaelen18 publicationsRobert A. Schoevers18 publicationsAlexander M. Sherwood17 publicationsAmanda Feilding17 publicationsClaire J. Foldi17 publicationsDavid J. Hellerstein17 publicationsFelix Müller17 publicationsFernando Rosas17 publicationsFilip Tylš17 publicationsJeffrey Guss17 publicationsManish Agrawal17 publicationsMilan Scheidegger17 publicationsTomislav Majić17 publicationsWilliam A. Richards17 publicationsChristopher S. Stauffer16 publicationsKevin F. Boehnke16 publicationsMalievskaia E16 publicationsNadav Liam Modlin16 publicationsSophia Armand16 publicationsYale University16 publicationsCharles S. Grob15 publicationsEmmanuelle A. D. Schindler15 publicationsFelix Hasler15 publicationsGeyer MA15 publicationsJason B. Luoma15 publicationsKelly JR15 publicationsLea J. Mertens15 publicationsLindsey Marwood15 publicationsSuresh Muthukumaraswamy15 publicationsTzuri Lifschytz15 publicationsUniversity Hospital15 publicationsAnna M. Becker14 publicationsBoadie W. Dunlop14 publicationsBrandon Weiss14 publicationsFederico Seragnoli14 publicationsGerhard Gründer14 publicationsHenrik Jungaberle14 publicationsJanis Fricke14 publicationsJeng-Yu Tsai14 publicationsJochen Gartz14 publicationsJoshua S. Siegel14 publicationsMeg J Spriggs14 publicationsMika Turkia14 publicationsNathalie M. Rieser14 publicationsPablo Mallaroni14 publicationsRodrigo B. Mansur14 publicationsSusan L. Rossell14 publications