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Gaël Chételat

24 papers in the library · 578 citations · publishing 2017-2026

Papers

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Exploring the effects of mindfulness meditation on resting-state functional connectivity: an overview.

Reviews in the Neurosciences June 3, 2026 Thomas Le François, Charlotte E Hilberdink, Bérengère Guillery-Girard et al.

Mindfulness meditation has received growing interest in research over the past decades. Mindfulness meditation training (MMT) can be employed as a mental practice to improve cognitive skills such as attention and emotion regulation and may promote well-being. Neuroimaging studies have emerged to understand the effects of MMT on brain functioning. However, no review exists on the effects of MMT...

Impact of meditation on brain age derived from multimodal neuroimaging in experts and older adults from a randomized trial

Scientific Reports October 28, 2025 Sacha Haudry, Natacha Lambert, Christian Gaser et al.

Meditation is thought to promote healthy aging by improving mental health, preserving brain integrity and reducing Alzheimer's disease risk. We examined the impact of long-term meditation expertise and an 18-month meditation training on brain aging in older adults using machine learning. We included 25 Older Expert Meditators (OldExpMed) with > 20 years of practice and 135 Cognitively...

EEG Brain Rhythms During Resting-State Wakefulness and Sleep in Elderly Expert Meditators.

Journal of Sleep Research July 29, 2025 Pierre Champetier, Anaïs Hamel, Claire André et al.

Meditation practice has been shown to impact resting-state EEG activity in expert meditators, but its benefits on sleep, which is particularly affected with age, are poorly understood. Our aim was to better understand the effects of long-term meditation practice on resting-state EEG and sleep in older adults. Twenty-seven elderly expert meditators (mean age ± SD: 70.7 ± 5.0 years) were compared...

Examining cognitive differences in expert meditators and non-meditators older adults.

Scientific Reports May 15, 2025 Florence Requier, Hamed Mohammadi, Harriet Demnitz-King et al.

With aging, slight changes in some cognitive processes can be observed. Therefore, we aimed to assess if meditation expertise is associated with preserved cognition in key domains affected in aging. We used data from two older-adult samples of the Medit-Ageing Age-well Study: 135 non-meditators and 27 expert meditators. We examined group differences in four objective cognitive domains...

ENIGMA-Meditation: Worldwide Consortium for Neuroscientific Investigations of Meditation Practices.

Biological psychiatry. Cognitive neuroscience and neuroimaging April 1, 2025 Saampras Ganesan, Fernando A Barrios, Ishaan Batta et al. 6 citations

Meditation is a family of ancient and contemporary contemplative mind-body practices that can modulate psychological processes, awareness, and mental states. Over the last 40 years, clinical science has manualized meditation practices and designed various meditation interventions that have shown therapeutic efficacy for disorders including depression, pain, addiction, and anxiety. Over the past...

The evolution of subjective cognition after meditation training in older people: a secondary analysis of the three-arm age-well randomized controlled trial.

Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition March 1, 2025 Florence Requier, Harriet Demnitz-King, Eric Frison et al.

Aging is associated with cognitive changes, even in the absence of brain pathology. This study aimed to determine if meditation training, by comparison to active and passive control groups, is linked to changes in the perception of cognitive functioning in older adults. One hundred thirty-four healthy older participants from the Age-Well Randomized Clinical Trial were included: 45 followed a...

Effects of an 18-month meditation training on dynamic functional connectivity states in older adults: Secondary analyses from the Age-Well randomized controlled trial

Imaging Neuroscience 2025 Sacha Haudry, Sophie Dautricourt, Julie Gonneaud et al.

Meditation training in older adults has been proposed as a non-pharmacological intervention to promote healthy aging and lower the risks of developing Alzheimer's disease (AD). Resting-state dynamic functional network connectivity (dFNC) highlighted two brain states, the "strongly connected" and "default mode network (DMN)-negatively connected" states, associated with protective factors for...

Effect of an 18-Month Meditation Training on Telomeres in Older Adults: A Secondary Analysis of the Age-Well Randomized Controlled Trial.

Biological Psychiatry Global Open Science 2025 Perla Kaliman, María Jesús Álvarez-López, Asrar Lehodey et al.

Shorter telomeres are associated with increased risk of cognitive decline and age-related diseases. Developing interventions to promote healthy aging by preserving telomere integrity is of paramount importance. Here, we investigated the effect of an 18-month meditation intervention on telomere length (TL) measures in older people without cognitive impairment. A total of 137 adults age ≥65 years...

Meditation dosage predicts self- and teacher-perceived responsiveness to an 18-month randomised controlled trial

Scientific Reports November 2, 2024 Marco Schlosser, Julie Gonneaud, Stefano Poletti et al. 2 citations

Understanding the factors that predict why some individuals perceive to respond more to meditation training than others could impact the development, efficacy, adherence levels, and implementation of meditation-based interventions. We investigated individual-level variables associated with self- and teacher-perceived responsiveness to longer-term meditation training. This study presents a...

Exploring the Embodied Mind: Functional Connectome Fingerprinting of Meditation Expertise.

Biological Psychiatry Global Open Science November 1, 2024 Sébastien Czajko, Jelle Zorn, Loïc Daumail et al. 5 citations

Short mindfulness-based interventions have gained traction in research due to their positive impact on well-being, cognition, and clinical symptoms across various settings. However, these short-term trainings are viewed as preliminary steps within a more extensive transformative path, presumably leading to long-lasting trait changes. Despite this, little is still known about the brain...

Effects of a mindfulness-based intervention and a health self-management programme on psychological well-being in older adults with subjective cognitive decline: Secondary analyses from the SCD-Well randomised clinical trial.

PLoS One 2023 Marco Schlosser, Harriet Demnitz-King, Thorsten Barnhofer et al. 13 citations

Older adults with subjective cognitive decline (SCD) recruited from memory clinics have an increased risk of developing dementia and regularly experience reduced psychological well-being related to memory concerns and fear of dementia. Research on improving well-being in SCD is limited and lacks non-pharmacological approaches. We investigated whether mindfulness-based and health education...

An 18-month meditation training selectively improves psychological well-being in older adults: A secondary analysis of a randomised controlled trial.

PLoS One 2023 Marco Schlosser, Olga Klimecki, Fabienne Collette et al. 6 citations

As the world population is ageing, it is vital to understand how older adults can maintain and deepen their psychological well-being as they are confronted with the unique challenges of ageing in a complex world. Theoretical work has highlighted the promising role of intentional mental training such as meditation practice for enhancing human flourishing. However, meditation-based randomised...

An 18-month meditation training selectively improves psychological well-being in older adults

October 31, 2022 Marco Schlosser, Olga Klimecki, Fabienne Collette et al.

Objectives: As the world population is ageing, it is vital to understand how older adults can maintain and deepen their psychological well-being as they are confronted with the unique challenges of ageing in a complex and vulnerable world. Theoretical work has highlighted the promising role of intentional mental training such as meditation practice for enhancing human flourishing. However,...

Effect of an 18-Month Meditation Training on Regional Brain Volume and Perfusion in Older Adults

JAMA Neurology October 10, 2022 Gaël Chételat, Antoine Lutz, Olga Klimecki et al. 45 citations

Importance: No lifestyle-based randomized clinical trial directly targets psychoaffective risk factors of dementia. Meditation practices recently emerged as a promising mental training exercise to foster brain health and reduce dementia risk. Objective: To investigate the effects of meditation training on brain integrity in older adults. Design, Setting, and Participants: Age-Well was a...

The protective effect of mindfulness and compassion meditation practices on ageing: Hypotheses, models and experimental implementation.

Ageing Research Reviews October 1, 2021 Antoine Lutz, Gaël Chételat, Fabienne Collette et al.

Alzheimer's disease (AD) represents a major health and societal issue; there is no treatment to date and the pathophysiological mechanisms underlying this disease are not well understood. Yet, there is hope that AD risk factors and thus the number of AD cases can be significantly reduced by prevention measures based on lifestyle modifications as targeted by non-pharmacological preventive...

The Effect of Mindfulness-based Programs on Cognitive Function in Adults: A Systematic Review and Meta-analysis

Neuropsychology Review August 4, 2021 Tim Whitfield, Thorsten Barnhofer, Rebecca L. Acabchuk et al. 193 citations

Mindfulness-based programs (MBPs) are increasingly utilized to improve mental health. Interest in the putative effects of MBPs on cognitive function is also growing. This is the first meta-analysis of objective cognitive outcomes across multiple domains from randomized MBP studies of adults. Seven databases were systematically searched to January 2020. Fifty-six unique studies (n = 2,931) were...

Measuring psychological mechanisms in meditation practice: Using a phenomenologically grounded classification system to develop theory-based composite scores

April 13, 2021 Marco Schlosser, Thorsten Barnhofer, Florence Requier et al. 2 citations

Objectives: Deepening our understanding of the mechanisms by which meditation practices impact well-being and human flourishing is essential for advancing the science of meditation. The phenomenologically grounded classification system introduced by Dahl, Lutz, and Davidson (2015) distinguishes attentional, constructive, and deconstructive forms of meditation based on the psychological...

The effect of mindfulness‐based programs on cognitive performance across the lifespan: A systematic review and meta‐analysis

Alzheimer s & Dementia December 1, 2020 Tim Whitfield, Thorsten Barnhofer, Rebecca L. Acabchuk et al. 6 citations

Abstract Background The primary focus of mindfulness‐based program (MBP) research to date has been on mental health. More recently, attention has turned to putative effects on cognition. An evidence synthesis is required to answer the key question of ‘Do MBPs confer cognitive benefit, and if so, for whom?’ A particularly crucial distinction is whether benefits differ according to individuals’...

Why could meditation practice help promote mental health and well-being in aging?

Alzheimer s Research & Therapy June 22, 2018 Gaël Chételat, Antoine Lutz, Eider M. Arenaza‐Urquijo et al. 106 citations

Psycho-affective states or traits such as stress, depression, anxiety and neuroticism are known to affect sleep, cognition and mental health and well-being in aging populations and to be associated with increased risk for Alzheimer's disease (AD). Mental training for stress reduction and emotional and attentional regulation through meditation practice might help reduce these adverse factors. So...

The Age‐Well randomized controlled trial of the Medit‐Ageing European project: Effect of meditation or foreign language training on brain and mental health in older adults

Alzheimer s & Dementia Translational Research & Clinical Interventions 2018 Géraldine Poisnel, Eider M. Arenaza‐Urquijo, Fabienne Collette et al. 103 citations

INTRODUCTION: The Age-Well clinical trial is an ongoing monocentric, randomized, controlled trial aiming to assess an 18-month preventive meditation-based intervention directly targeting the attentional and emotional dimensions of aging to promote mental health and well-being in elderly people. METHODS: One hundred thirty-seven cognitively unimpaired older adults are randomized to either an...

The Age‐Well observational study on expert meditators in the Medit‐Ageing European project

Alzheimer s & Dementia Translational Research & Clinical Interventions 2018 Antoine Lutz, Olga Klimecki, Fabienne Collette et al. 18 citations

INTRODUCTION: The Age-Well observational, cross-sectional study investigates the affective and cognitive mechanisms of meditation expertise with behavioral, neuroimaging, sleep, and biological measures sensitive to aging and Alzheimer's disease (AD). METHODS: Thirty cognitively unimpaired individuals aged 65 years or older with at least 10,000 hours of practice in mindfulness meditation (MM)...

Reduced age-associated brain changes in expert meditators: a multimodal neuroimaging pilot study

Scientific Reports August 25, 2017 Gaël Chételat, Florence Mezenge, Clémence Tomadesso et al. 67 citations

Aging is associated with progressive cerebral volume and glucose metabolism decreases. Conditions such as stress and sleep difficulties exacerbate these changes and are risk factors for Alzheimer's disease. Meditation practice, aiming towards stress reduction and emotion regulation, can downregulate these adverse factors. In this pilot study, we explored the possibility that lifelong meditation...