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Consumer-Grade Neurofeedback With Mindfulness Meditation: Meta-Analysis
Isaac Treves1,2, Zia Bajwa3, Keara D Greene4
1McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, United States.
Journal of Medical Internet Research
|April 17, 2025
Summary
Consumer neurofeedback devices show modest effects in reducing psychological distress but do not enhance mindfulness or cognition. Current evidence does not support claims of brain modulation during meditation, suggesting potential placebo effects.
Area of Science:
- Neuroscience
- Psychology
- Cognitive Science
Background:
- Growing interest in using neuroscientific technology, specifically consumer-grade neurofeedback devices, to enhance meditation practices and improve psychological well-being.
- Mindfulness-based neurofeedback aims to optimize brain targets (e.g., alpha and theta band activity) to deepen meditation experiences and yield positive outcomes.
Purpose of the Study:
- To systematically review and meta-analyze the effects of consumer-grade mindfulness-based neurofeedback compared to control conditions.
- To assess impacts on psychological distress, cognitive function, physiological health, state mindfulness, and brain measures.
- This study was preregistered to ensure methodological transparency.
Main Methods:
- Included 16 randomized controlled trials (RCTs) and 5 randomized within-participant designs, totaling 763 and 167 participants, respectively.
- Analyzed outcomes including psychological distress, cognitive function, physiological health, state mindfulness, and brain activity.
- Assessed study risk of bias, reporting bias, and publication bias.
Main Results:
- A modest effect was observed for decreased psychological distress (g=-0.16, P=.03), with low heterogeneity.
- No significant improvements were found in cognition (g=0.07, P=.48), state mindfulness (g=0.02, P=.83), or physiological health (g=0.11, P=.57) compared to controls.
- Mechanistic modulation of brain targets was not demonstrated; neurofeedback effects may be influenced by neurosuggestion (placebo).
Conclusions:
- Current evidence does not support claims that consumer-grade devices enable participants to modulate brain activity and deepen meditation.
- The observed effects might be attributable to placebo effects (neurosuggestion) rather than direct neurofeedback.
- Future research requires larger sample sizes, rigorous sham-controlled RCTs, and individualized device calibration.
