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Lucas Oliveira Maia

18 papers in the library · 315 citations · publishing 2018-2026

Papers

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Integration of the Psychedelic Experience Among Brazilians: A Survey Study.

Journal of Psychoactive Drugs May 19, 2026 Ana Cláudia Mesquita Garcia, Lucas Oliveira Maia, Everson Meireles et al.

This study examines psychedelic integration among Brazilian users by validating a Brazilian Portuguese version of the Psychedelic Integration Scales (PIS), developed through translation and cultural adaptation to ensure relevance and applicability within the Brazilian sociocultural context. A cross-sectional survey was conducted with 1379 participants recruited online. Confirmatory Factor...

The Brazilian Version of the Mystical Orientation Scale Revised (MOSR-BR): An Exploratory Study.

Journal of Religion and Health March 31, 2026 Ana Cláudia Mesquita Garcia, Everson Meireles, Eliza Mara Das Chagas Paiva et al.

Mystical experiences are commonly described in the context of psychedelic use and other forms of expanded states of consciousness. Although the Mystical Orientation Scale Revised (MOSR) has been used in international studies, no Brazilian Portuguese version had been tested to date. This exploratory study aimed to translate, culturally adapt, and examine the psychometric properties of the MOSR...

DOI: 10.1007/s10943-026-02624-3 (opens in new tab) Full text (opens in new tab) Brazil Death transcendence Mystical orientation Psychedelic substances +1

Integrating Holistic Communication into Psychedelic-Assisted Therapies in Hospice and Palliative Care: An Approach Based on Peplau's Theory.

Journal of Holistic Nursing September 3, 2025 Ana Cláudia Mesquita Garcia, Felipe Teixeira, Lucas Oliveira Maia

Psychedelic-assisted therapy (PAT) has shown promising results in alleviating psychological and existential suffering among individuals with serious illnesses. In parallel, nursing offers a robust theoretical framework to guide therapeutic communication in this context. This article explores the application of Peplau's Theory of Interpersonal Relations (PTIR) as a foundation for holistic...

DOI: 10.1177/08980101251374371 (opens in new tab) Full text (opens in new tab) Hospice Interpersonal relations Nursing Palliative care. +1

Death Anxiety Among Users and Non-Users of Psychedelics.

Journal of Psychoactive Drugs January 10, 2025 Ana Cláudia Mesquita Garcia, Lucas Oliveira Maia, Everson Meireles et al. 8 citations

This study is a survey-type, cross-sectional study conducted in Brazil (n = 517), with online data collection taking place from April to June 2022. The main objective of this study was to evaluate the death anxiety in users and non-users of psychedelics. To this end, we also assessed the validity and reliability of the Death Anxiety Scale in Brazil. The following instruments were used for data...

DOI: 10.1080/02791072.2025.2451035 (opens in new tab) Full text (opens in new tab) Death anxiety Psychedelics Psychometrics Validity +3

Spiritual Well-Being Among Users and Non-Users of Psychedelics: A Cross-Sectional Study.

Journal of Psychoactive Drugs 2025 Ana Cláudia Mesquita Garcia, Lucas Oliveira Maia, Everson Meireles et al. 3 citations

This study evaluated the psychometric properties of the Spiritual Well-Being Scale (SWBS) in a Brazilian sample. We analyzed spiritual well-being, defined as existential well-being (EWB) and religious well-being (RWB), among individuals with varying religious and spiritual experiences, both users and non-users of psychedelics. The online cross-sectional survey was conducted in Brazil, from...

DOI: 10.1080/02791072.2023.2284343 (opens in new tab) Full text (opens in new tab) Psychedelics-hallucinogens-entheogens Religiosity Spiritual well-being Spirituality-religion-faith +2

Psychedelic-assisted therapies for existential and spiritual suffering in palliative care.

Progress in Brain Research 2025 Ana Cláudia Mesquita Garcia, Lucas Oliveira Maia

Existential and spiritual suffering are frequently reported by individuals facing serious illnesses, particularly at the end of life, and are associated with diminished quality of life, increased psychological distress, and requests for hastened death. While Palliative Care (PC) aims to provide holistic support, existing therapeutic options often fail to adequately address the profound...

DOI: 10.1016/bs.pbr.2025.07.002 (opens in new tab) Full text (opens in new tab) End-of-life care Existential suffering Palliative care Psychedelics +2

Exploring Psychedelics for Alleviating Existential and Spiritual Suffering in People With Serious Illnesses: Links to the Theory of Self-Transcendence.

Journal of Holistic Nursing May 29, 2024 Ana Cláudia Mesquita Garcia, Lucas Oliveira Maia, Pamela G. Reed 3 citations

The fields of palliative and holistic Nursing are dedicated to providing comprehensive care for the person, emphasizing special attention to the existential and spiritual aspects of care. Psychedelic-assisted therapy has emerged as a promising approach for symptom management in individuals with serious illnesses, particularly those of existential and spiritual origin. People who undergo...

DOI: 10.1177/08980101241257836 (opens in new tab) Psychedelic treatment Entheogenic therapy Psychedelics in healthcare End-of-life care +11

The current state of ayahuasca research in animal models: A systematic review.

Progress in Neuro-Psychopharmacology and Biological Psychiatry July 13, 2023 Dimitri Daldegan-Bueno, Natalia Maria Simionato, Vanessa Manchim Favaro et al. 18 citations

The psychedelic brew ayahuasca is increasingly being investigated for its therapeutic potential. Animal models are essential to investigate the pharmacological effects of ayahuasca since they can control important factors influencing it, such as the set and setting. Review and summarise data available on ayahuasca research using animal models. We systematically searched five databases (PubMed,...

Ayahuasca's therapeutic potential: What we know - and what not.

European Neuropsychopharmacology 2023 Lucas Oliveira Maia, Dimitri Daldegan-Bueno, Isabel Wießner et al. 46 citations

The therapeutic potential of the psychedelic brew ayahuasca has been investigated in preclinical and clinical studies. Currently, the most consistent evidence refers to depression. However, various studies suggest that ayahuasca may comprise therapeutic benefits in other health conditions. This narrative review provides a comprehensive, up-to-date overview of ayahuasca's therapeutic effects in...

Low-dose LSD and the stream of thought: Increased Discontinuity of Mind, Deep Thoughts and abstract flow.

Psychopharmacology June 1, 2022 Isabel Wießner, Marcelo Falchi, Fernanda Palhano-Fontes et al. 22 citations

Stream of thought describes the nature of the mind when it is freely roaming, a mental state that is continuous and highly dynamic as in mind-wandering or free association. Classic serotonergic psychedelics are known to profoundly impact perception, cognition and language, yet their influence on the stream of thought remains largely unexplored. To elucidate the effects of LSD on the stream of...

DOI: 10.1007/s00213-021-06006-3 (opens in new tab) Full text (opens in new tab) LSD Abstract thinking Forward flow Free association +4

LSD, afterglow and hangover: Increased episodic memory and verbal fluency, decreased cognitive flexibility.

European Neuropsychopharmacology May 1, 2022 Isabel Wießner, Rodolfo Olivieri, Marcelo Falchi et al. 42 citations

Psychedelics acutely impair cognitive functions, but these impairments decline with growing experiences with psychedelics and microdoses may even exert opposing effects. Given the recent evidence that psychedelics induce neuroplasticity, this explorative study aimed at investigating the potential of psychedelics to sub-acutely change cognition. For this, we applied a randomized, double-blind,...

DOI: 10.1016/j.euroneuro.2022.01.114 (opens in new tab) Full text (opens in new tab) Cognitive flexibility Executive functions Phonological verbal fluency Psycholytic dose +2

Psychosocial and Drug Use Assessment of Regular vs. Non-Regular Ayahuasca Users in a Brazilian Sample: a Web-Based Survey

Substance Use & Misuse April 25, 2022 Dimitri Daldegan-Bueno, Dóra Révész, Paulo Rogério Morais et al. 15 citations

Background: Preliminary evidence suggests that long-term ayahuasca use is associated with better psychosocial outcomes and less drug use; however, available data on the association between ayahuasca intake frequency and psychosocial outcomes is limited. Objectives: We sought to characterize and investigate the association of regular ayahuasca use, as compared to non-regular use, on licit...

Ayahuasca and tobacco smoking cessation: results from an online survey in Brazil.

Psychopharmacology February 18, 2022 Dimitri Daldegan-Bueno, Lucas Oliveira Maia, Carolina Marcolino Massarentti et al.

RationaleSmoking-related disease is a major problem globally. Effective smoking cessation treatments are however limited. Increasing evidence suggests that psychedelics have potential as treatments for substance use disorders and may therefore prove an option in aiding smoking cessation.ObjectivesTo establish which factors predict smoking cessation in people who reported quitting or reducing...

DOI: 10.1007/s00213-022-06063-2 (opens in new tab) Ayahuasca Psychedelic Hallucinogen Smoking cessation +9

The Therapeutic Potential of Psychedelic-assisted Therapies for Symptom Control in Patients Diagnosed With Serious Illness: A Systematic Review

Journal of Pain and Symptom Management February 11, 2022 Lucas Oliveira Maia, Yvan Beaussant, Ana Cláudia Mesquita Garcia 59 citations

ContextPeople affected by serious illness usually experience suffering in its various dimensions, not only in the physical but also in the psychosocial and spiritual aspects. The interest in psychedelic-assisted therapies as a potential new therapeutic modality has increased since evidence suggests a significant impact of their use on the outcomes of patients with serious illness.ObjectivesTo...

LSD and creativity: Increased novelty and symbolic thinking, decreased utility and convergent thinking

Journal of Psychopharmacology February 1, 2022 Isabel Wießner, Marcelo Falchi-Carvalho, Lucas Oliveira Maia et al. 43 citations

Background: Controversy surrounds psychedelics and their potential to boost creativity. To date, psychedelic studies lack a uniform conceptualization of creativity and methodologically rigorous designs. Aims: This study aimed at addressing previous issues by examining the effects of lysergic acid diethylamide (LSD) on creativity using multimodal tasks and multidimensional approaches. Methods:...

DOI: 10.1177/02698811211069113 (opens in new tab) Creativity Divergent thinking Originality Cognitive psychology +9

Ayahuasca blocks ethanol preference in an animal model of dependence and shows no acute toxicity

Journal of Ethnopharmacology November 22, 2021 Bruno Gianfratti, Ricardo Tabach, Marna Eliana Sakalem et al. 23 citations

Ethnopharmacological relevanceAyahuasca, a psychoactive beverage prepared from Banisteriopsis caapi and Psychotria viridis, is originally used by Amazon-based indigenous and mestizo groups for medicinal and ritualistic purposes. Nowadays, ayahuasca is used in religious and shamanic contexts worldwide, and preliminary evidence from preclinical and observational studies suggests therapeutic...

DOI: 10.1016/j.jep.2021.114865 (opens in new tab) Ayahuasca Acute toxicity Pharmacology Ethanol +1

The ritual use of ayahuasca during treatment of severe physical illnesses: a qualitative study

Journal of Psychoactive Drugs December 7, 2020 Lucas Oliveira Maia, Dimitri Daldegan-Bueno, Luís Fernando Tófoli 33 citations

Diseases that threaten life raise existential questions that can be a source of psychological distress. Studies with psychedelics demonstrate therapeutic effects for anxiety and depression associated with life-threatening illnesses. Ayahuasca has been proposed as a possible therapeutic agent in the treatment of psychiatric disorders. Preliminary studies suggest that ayahuasca could promote...

DOI: 10.1080/02791072.2020.1854399 (opens in new tab) Ayahuasca Anxiety Thematic analysis Qualitative research +8

Ayahuasca e redução do tabagismo

Revista dos Trabalhos de Iniciação Científica da UNICAMP December 13, 2018 Carolina Marcolino Massarentti, Luís Fernando Tófoli, Lucas Oliveira Maia et al.

A Ayahuasca é um psicodélico utilizado em um contexto ritualístico e por religiões sincréticas brasileiras. Os usuários relatam experiências como aparecimento de imagens visuais com olhos fechados, indução de um estado de introspecção e reflexão, indução de memórias, desencadeamento de emoções intensas, insights sobre preocupações pessoais e cura de males físicos e psicológico. Neste contexto,...