Progress in neuro-psychopharmacology & biological psychiatry
June 20, 2026
Ewen Kervadec, Pauline Mathieu, Baptiste Fauvel et al.
The renewal of psychedelic medicine has garnered significant scientific interest, with large efforts dedicated to the understanding of the complex subjective experiences induced by these substances. The Altered States of Consciousness (ASC) questionnaire represents the most comprehensive instrument for measuring such experiences yet lacks a validated French translation despite its centrality to...
Progress in neuro-psychopharmacology & biological psychiatry
January 23, 2026
Bruno Romeo, Ewen Kervadec, Baptiste Fauvel et al.
1 citation
The intensity of the psychedelic experience has been shown to be associated with its clinical efficacy. This study aims to investigate the factors that may influence the level of altered consciousness during naturalistic psychedelic use, which serves as a proxy for the intensity of the psychedelic experience. A retrospective online survey was conducted on individuals who reported a psychedelic...
Neuroscience and Biobehavioral Reviews
May 1, 2025
Bruno Romeo, Ewen Kervadec, Baptiste Fauvel et al.
36 citations
Psychedelic-assisted therapies have demonstrated promising results in treating mental disorders, with results suggesting that the subjective intensity and quality of psychedelic experiences plays a significant role in mediating therapeutic effects. However, the strength of this association across diagnoses and treatment settings remains underexplored. We searched MEDLINE, Embase, and PsycINFO...
Journal of Psychoactive Drugs
April 25, 2025
Bruno Romeo, Ewen Kervadec, Baptiste Fauvel et al.
Neurobiological effects and psychological models propose that psychedelics may promote psychological flexibility, suggesting a transdiagnostic effect by disrupting maladaptive patterns. The objective of this study was therefore to investigate the determinants of psychological flexibility change following a psychedelic use. This retrospective online survey included French individuals who had...
Progress in neuro-psychopharmacology & biological psychiatry
March 20, 2025
Bruno Romeo, Ewen Kervadec, Baptiste Fauvel et al.
5 citations
The intensity of the psychedelic experience has been hypothesized as the main predictor of response to a psychedelic treatment. This study aimed to investigate factors that may be associated with the intensity of mystical experiences during naturalistic psychedelic use. The data of this comprehensive sample were aggregated from four previous retrospective surveys, where mystical experience...
Journal of Psychoactive Drugs
July 3, 2024
Bruno Romeo, Ewen Kervadec, Baptiste Fauvel et al.
5 citations
Treating cannabis use disorder remains a significant challenge in the field of addiction medicine. Some recent studies point to psychedelic-assisted psychotherapy as a potential treatment option for substance use disorders. The objective of this study was therefore to explore the impact of naturalistic psychedelic experiences on cannabis use and psychological flexibility. An online...
Psychiatry Research
May 1, 2024
Bruno Romeo, Ewen Kervadec, Baptiste Fauvel et al.
48 citations
Psychotherapies assisted by psychedelic substances have shown promising results in the treatment of psychiatric disorders. The aim of this systematic review and meta-analysis was to evaluate safety data in human subjects. We carried out a search on MEDLINE, Embase and PsycINFO databases between 2000 and 2022. Standardized mean differences between different dose ranges and between acute and...
Alcohol and alcoholism (Oxford, Oxfordshire)
January 17, 2024
Ewen Kervadec, Baptiste Fauvel, Lana Strika-Bruneau et al.
15 citations
Alcohol use can be significantly associated with negative social, professional, and health outcomes. Even more so, alcohol use disorder (AUD) is a critical public health issue and major avoidable risk factor. This study aimed to examine the effect of a naturalistic psychedelic experience on alcohol use and related measures. A retrospective online survey was conducted on 160 individuals who...
Frontiers in Psychiatry
2024
Delphine Yeh, Sylvain Penaud, Alexandre Gaston-Bellegarde et al.
3 citations
Self-disorders constitute a core feature of the schizophrenia spectrum, including early stages such as first-episode psychosis (FEP). These disorders impact the minimal Self, or bodily self-consciousness, which refers to the basic, pre-reflective sense of embodied experience. The minimal Self is intrinsically linked to episodic memory, which captures specific past experiences of the Self....
Journal of Psychoactive Drugs
2023
Bruno Romeo, Baptiste Fauvel, S Dejean et al.
14 citations
Tobacco use disorder is a major public health concern. The aim of this study was to investigate the impact of a psychedelic experience in a natural context on tobacco use. A retrospective online survey was conducted on 173 individuals who reported having had a psychedelic experience while being smokers. Demographic information was collected, and characteristics of the psychedelic experience,...
Consciousness and Cognition
2019
Dominique Makowski, Marco Sperduti, Samantha Lavallée et al.
Emotional stimuli have been shown to automatically hijack attention, hindering the detection of forthcoming targets. Mindfulness is defined as a present moment non-judgemental attentional stance that can be cultivated by meditation practices, but that may present interindividual variability in the general population. The mechanisms underlying modification in emotional reactivity linked to...