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Jonny Martell

11 papers in the library · 2,166 citations · publishing 2021-2026

Papers

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Psilocybin therapy for adult females with anorexia nervosa: pilot study.

Br J Psychiatry July 8, 2026 Hannah Douglass, Meg J. Spriggs, Kate Godfrey et al.

Background Anorexia nervosa is a debilitating eating disorder with high mortality and chronicity rates owing to the paucity of effective existing treatments. Several clinical trials using psilocybin therapy have demonstrated therapeutic efficacy and safety in psychiatric conditions, including anorexia nervosa. Aims This study aimed to further assess the safety, feasibility and potential...

Study Protocol for ‘PsilOCD: A Pharmacological Challenge Study Evaluating the Effects of the 5-HT2A Agonist Psilocybin on the Neurocognitive and Clinical Correlates of Compulsivity’

Cureus January 29, 2025 Sorcha O'Connor, Kate Godfrey, Sara Reed et al. 2 citations

This study's results are expected to offer critical insights into the neural mechanisms underlying the effects of psilocybin-assisted therapy in treating OCD, and whether these correlate with changes in the cognitive features of the condition. As a secondary aim, it will ascertain whether a low, tolerable dose is a feasible and efficacious clinical treatment, and will provide crucial data to...

Correction: Study Protocol for 'PsilOCD: A Pharmacological Challenge Study Evaluating the Effects of the 5-HT2A Agonist Psilocybin on the Neurocognitive and Clinical Correlates of Compulsivity'.

Cureus 2025 Sorcha O'Connor, Kate Godfrey, Sara Reed et al. correction

Background: Obsessive-compulsive disorder (OCD) is a complex condition marked by persistent distressing thoughts and repetitive behaviours. Despite its prevalence, the mechanisms behind OCD remain elusive, and current treatments are limited. This protocol outlines an investigative study for individuals with OCD, exploring the potential of psilocybin to improve key components of cognition...

Effect of psilocybin versus escitalopram on depression symptom severity in patients with moderate-to-severe major depressive disorder: observational 6-month follow-up of a phase 2, double-blind, randomised, controlled trial

EClinicalMedicine September 23, 2024 David Erritzøe, Tommaso Barba, Kyle T. Greenway et al. 46 citations

The Alexander Mosley Charitable Trust and by the founding partners of Imperial College London's Centre for Psychedelic Research.

Personality change in a trial of psilocybin therapy v. escitalopram treatment for depression.

Psychological Medicine 2024 Brandon Weiss, Induni Ginige, Lu Shannon et al. 38 citations

Psilocybin Therapy (PT) is being increasingly studied as a psychiatric intervention. Personality relates to mental health and can be used to probe the nature of PT's therapeutic action. In a phase 2, double-blind, randomized, active comparator controlled trial involving patients with moderate-to-severe major depressive disorder, we compared psilocybin with escitalopram, over a core 6-week trial...

Personality Change in a Trial of Psilocybin Therapy vs Escitalopram Treatment for Depression – CORRIGENDUM

Psychological Medicine July 19, 2023 Brandon Weiss, Induni Ginige, Lu Shannon et al. 1 citation

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Human brain effects of DMT assessed via EEG-fMRI.

Proceedings of the National Academy of Sciences of the United States of America March 28, 2023 Christopher Timmermann, Leor Roseman, Sharad Haridas et al. 217 citations

Psychedelics have attracted medical interest, but their effects on human brain function are incompletely understood. In a comprehensive, within-subjects, placebo-controlled design, we acquired multimodal neuroimaging [i.e., EEG-fMRI (electroencephalography-functional MRI)] data to assess the effects of intravenous (IV) N,N-Dimethyltryptamine (DMT) on brain function in 20 healthy volunteers....

Therapeutic Alliance and Rapport Modulate Responses to Psilocybin Assisted Therapy for Depression

Frontiers in Pharmacology March 31, 2022 Roberta Murphy, Roberta Murphy, Hannes Kettner et al. 229 citations

Background: Across psychotherapeutic frameworks, the strength of the therapeutic alliance has been found to correlate with treatment outcomes; however, its role has never been formally assessed in a trial of psychedelic-assisted therapy. We aimed to investigate the relationships between therapeutic alliance and rapport, the quality of the acute psychedelic experience and treatment outcomes....

Therapeutic Alliance and Rapport Modulate Responses to Psilocybin Assisted Therapy for Depression

Frontiers in Pharmacology March 31, 2022 Roberta Murphy, Roberta Murphy, Hannes Kettner et al. 229 citations

Background: Across psychotherapeutic frameworks, the strength of the therapeutic alliance has been found to correlate with treatment outcomes; however, its role has never been formally assessed in a trial of psychedelic-assisted therapy. We aimed to investigate the relationships between therapeutic alliance and rapport, the quality of the acute psychedelic experience and treatment outcomes....

New Frontiers or a Bursting Bubble? Psychedelic Therapy Beyond the Dichotomy

Frontiers in Psychiatry September 10, 2021 Tehseen Noorani, Jonny Martell 32 citations

The publication in April 2021 of the Imperial College London Phase II study investigating \nthe efficacy of psilocybin-assisted therapy vs. escitalopram for depression reported differences \nin the primary outcome measure (the QIDS-SR16) between experimental and control arms as \nstatistically insignificant (1). However, secondary measures of depression, and other relevant \nmeasures (see...

Trial of Psilocybin versus Escitalopram for Depression

New England Journal of Medicine April 14, 2021 Robin Carhart-Harris, Bruna Giribaldi, Rosalind Watts et al. 1,372 citations

On the basis of the change in depression scores on the QIDS-SR-16 at week 6, this trial did not show a significant difference in antidepressant effects between psilocybin and escitalopram in a selected group of patients. Secondary outcomes generally favored psilocybin over escitalopram, but the analyses of these outcomes lacked correction for multiple comparisons. Larger and longer trials are...