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Research & Evidence

What does the research say?

Neurofeedback has been studied across attention, self-regulation, trauma-related symptoms, sleep, cognition, performance, and other areas. The strength of evidence varies by population, protocol, study design, and outcome measure.

Some studies report meaningful improvements, while well-controlled research in other areas has found smaller, mixed, or no specific effects. We believe the literature is most useful when both promising findings and important limitations are presented clearly.

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Methodology

How we read the research

Not all research carries the same weight. We give more weight to systematic reviews, meta-analyses, and randomized controlled trials with blinded outcome ratings, appropriate comparison conditions, and transparent reporting than to small, uncontrolled, or preliminary studies.

Neurofeedback research is especially sensitive to differences in protocol, expectancy effects, the type of comparison condition used, whether ratings were blinded, and whether participants actually learned to regulate the brain activity being trained. A study's design can matter as much as its result — and even a well-conducted meta-analysis is one data point in an evolving picture, not a final verdict.

  • Systematic reviews and meta-analyses that pool multiple studies
  • Randomized controlled trials with a real comparison condition
  • Blinded outcome ratings, not just participant or parent impressions
  • Whether participants actually learned to regulate the targeted brain activity
  • Transparent reporting of methods, dropouts, and negative or null results

Foundations

Foundations & research standards

Two papers that shape how the neurofeedback field studies itself — a foundational scientific review, and a consensus standard for how neurofeedback studies should be designed and reported.

Review article

Closed-loop brain training: the science of neurofeedback

Sitaram R, Ros T, Stoeckel L, et al. Nature Reviews Neuroscience. 2017;18(2):86-100.

DOI: 10.1038/nrn.2016.164 · PMID: 28003656

This major review describes neurofeedback as a form of brain-based biofeedback in which information about neural activity is provided in real time to support learning and self-regulation. It reviews proposed learning and neural mechanisms while also noting that demonstrating robust clinical effects remains an important research challenge.

View on PubMed

Research consensus

Consensus on the reporting and experimental design of clinical and cognitive-behavioural neurofeedback studies (CRED-nf checklist)

Ros T, Enriquez-Geppert S, Zotev V, et al. Brain. 2020;143(6):1674-1685.

DOI: 10.1093/brain/awaa009 · PMID: 32176800

An international group of neurofeedback researchers developed the CRED-nf checklist to improve experimental design and reporting. The recommendations emphasize appropriate controls, blinding, regulation success, behavioral outcomes, and transparent reporting.

Why it matters: Better methodology helps distinguish effects related to the training itself from expectancy, practice, and other nonspecific influences.

View on PubMed

Attention

Attention & ADHD research

Neurofeedback for ADHD is one of the most heavily studied applications. We lead with the most recent, largest, and most rigorous meta-analysis rather than the most favorable older study.

Systematic review + meta-analysis38 RCTs · 2,472 participants

Neurofeedback for Attention-Deficit/Hyperactivity Disorder: A Systematic Review and Meta-Analysis

Westwood SJ, Aggensteiner P-M, Kaiser A, et al. JAMA Psychiatry. 2025;82(2):118-129.

DOI: 10.1001/jamapsychiatry.2024.3702 · PMID: 39661381

This large meta-analysis found no meaningful overall improvement in ADHD symptoms when outcomes were rated by probably blinded observers. A small statistically significant effect appeared when analyses were restricted to established standard neurofeedback protocols, and a small improvement was reported for processing speed.

Interpretation: The findings do not support presenting neurofeedback as a proven stand-alone ADHD treatment. They also suggest that protocol selection and specific outcomes may matter and remain areas for further study.

View on PubMed

Systematic review + meta-analysis

Sustained effects of neurofeedback in ADHD: a systematic review and meta-analysis

Van Doren J, Arns M, Heinrich H, Vollebregt MA, Strehl U, Loo SK. European Child & Adolescent Psychiatry. 2019;28(3):293-305.

DOI: 10.1007/s00787-018-1121-4 · PMID: 29445867

This earlier review examined randomized studies with follow-up assessments two to twelve months after training. Parent-rated improvements were reported to persist at follow-up, particularly relative to non-active control conditions.

Limitation: These findings should be interpreted alongside newer analyses using stricter blinded outcomes and active comparison conditions.

View on PubMed

Randomized controlled trial

Personalized at-home neurofeedback compared to long-acting methylphenidate in children with ADHD: NEWROFEED, a European randomized noninferiority trial

Purper-Ouakil D, Blasco-Fontecilla H, Ros T, et al. Journal of Child Psychology and Psychiatry. 2022;63(2):187-198.

DOI: 10.1111/jcpp.13462 · PMID: 34165190

This multicenter trial tested personalized neurofeedback delivered largely at home in children with ADHD. Symptoms improved over time in both groups, but at-home neurofeedback did not demonstrate noninferiority to optimized long-acting methylphenidate and was less effective as a stand-alone intervention.

Why we include it: This study is particularly relevant because it demonstrates that structured at-home neurofeedback has been studied in a randomized clinical setting, while also providing an important reminder not to claim equivalence with medication. It describes that study's own protocol and equipment — not Mindspace's program.

View on PubMed

Self-Regulation

Stress, anxiety & trauma-related research

Researchers have explored biofeedback and neurofeedback in anxiety and trauma-related populations. Findings include promising signals as well as important methodological limitations.

Systematic review

Biofeedback and Neurofeedback for Anxiety Disorders: A Quantitative and Qualitative Systematic Review

Tolin DF, Davies CD, Moskow DM, Hofmann SG. Advances in Experimental Medicine and Biology. 2020;1191:265-289.

DOI: 10.1007/978-981-32-9705-0_16 · PMID: 32002934

The review found biofeedback interventions generally outperformed wait-list conditions but had not demonstrated superiority over active treatments or conditions designed to control for nonspecific effects. The authors also rated most of the existing literature as methodologically weak.

Scope note: This review examined biofeedback broadly, including multiple modalities; it is not evidence exclusively about EEG neurofeedback.

Interpretation: This supports continued study of self-regulation approaches while cautioning against attributing improvement specifically to neurofeedback without stronger controlled evidence.

View on PubMed

Systematic review + meta-analysis

Neurofeedback for post-traumatic stress disorder: systematic review and meta-analysis of clinical and neurophysiological outcomes

Askovic M, Soh N, Elhindi J, Harris AWF. European Journal of Psychotraumatology. 2023;14(2):2257435.

DOI: 10.1080/20008066.2023.2257435 · PMID: 37732560

This review found promising symptom findings across randomized neurofeedback studies involving PTSD populations. The evidence base remained relatively small and heterogeneous, so the authors emphasized the need for additional high-quality research.

View on PubMed

Sleep

Sleep & recovery research

Neurofeedback has also been investigated for sleep and insomnia. Earlier studies often reported subjective improvements, while more recent controlled evidence has not established a clear advantage over comparison interventions.

Systematic review + meta-analysis

Neurofeedback to enhance sleep quality and insomnia: a systematic review and meta-analysis of randomized clinical trials

Recio-Rodriguez JI, Fernandez-Crespo M, Sanchez-Aguadero N, et al. Frontiers in Neuroscience. 2024;18:1450163.

DOI: 10.3389/fnins.2024.1450163 · PMID: 39568666

This 2024 meta-analysis found that the surface-neurofeedback interventions studied did not provide additional benefit for self-reported sleep quality or insomnia compared with a range of control conditions.

Interpretation: Current randomized evidence does not justify claiming that neurofeedback is an established insomnia treatment.

View on PubMed

Review

Neurofeedback for insomnia: Current state of research

Lambert-Beaudet F, Journault W-G, Rudziavic Provençal A, Bastien CH. World Journal of Psychiatry. 2021;11(10):897-914.

DOI: 10.5498/wjp.v11.i10.897 · PMID: 34733650

This earlier review found that many studies reported improvements in subjective sleep, while objective sleep findings were inconsistent. The authors identified substantial methodological limitations and called for more rigorous replication.

View on PubMed

Together, the 2021 and 2024 reviews illustrate why newer controlled evidence can change how an intervention's evidence base is understood.

Cognition

Cognition & performance research

This research examines neurofeedback in healthy populations, not as treatment for a diagnosed condition.

Systematic review + meta-analysis11 studies included in the meta-analysis

Systematic Review and Meta-Analysis on the Effects of Neurofeedback Training of Theta Activity on Working Memory and Episodic Memory in Healthy Population

2022.

PMID: 36078752

In healthy participants, this meta-analysis reported moderate pooled improvements in working and episodic memory following theta neurofeedback. However, heterogeneity across studies means these findings should be viewed as promising rather than as a guarantee of cognitive enhancement.

View on PubMed

Reading The Evidence

Why can neurofeedback studies reach different conclusions?

Results can vary for many reasons, including:

  • Different neurofeedback protocols
  • Different study populations
  • EEG-based neurofeedback versus other neurofeedback modalities
  • The number and frequency of training sessions
  • Whether participants successfully learned the target regulation
  • Sham, wait-list, or active comparison conditions
  • Blinded versus unblinded outcome ratings
  • Small sample sizes
  • Differences in how outcomes were measured
  • Expectancy and therapeutic-contact effects

Mixed evidence doesn't mean every study is uninformative, and a single positive study doesn't establish that an intervention will work for everyone. Research is strongest when findings are replicated under rigorous, well-controlled conditions.

Sources

Selected references

  1. Sitaram R, Ros T, Stoeckel L, et al. Closed-loop brain training: the science of neurofeedback. Nature Reviews Neuroscience. 2017;18(2):86-100. PubMed
  2. Ros T, Enriquez-Geppert S, Zotev V, et al. Consensus on the reporting and experimental design of clinical and cognitive-behavioural neurofeedback studies (CRED-nf checklist). Brain. 2020;143(6):1674-1685. PubMed
  3. Westwood SJ, Aggensteiner P-M, Kaiser A, et al. Neurofeedback for Attention-Deficit/Hyperactivity Disorder: A Systematic Review and Meta-Analysis. JAMA Psychiatry. 2025;82(2):118-129. PubMed
  4. Van Doren J, Arns M, Heinrich H, Vollebregt MA, Strehl U, Loo SK. Sustained effects of neurofeedback in ADHD: a systematic review and meta-analysis. European Child & Adolescent Psychiatry. 2019;28(3):293-305. PubMed
  5. Purper-Ouakil D, Blasco-Fontecilla H, Ros T, et al. Personalized at-home neurofeedback compared to long-acting methylphenidate in children with ADHD: NEWROFEED, a European randomized noninferiority trial. Journal of Child Psychology and Psychiatry. 2022;63(2):187-198. PubMed
  6. Tolin DF, Davies CD, Moskow DM, Hofmann SG. Biofeedback and Neurofeedback for Anxiety Disorders: A Quantitative and Qualitative Systematic Review. Advances in Experimental Medicine and Biology. 2020;1191:265-289. PubMed
  7. Askovic M, Soh N, Elhindi J, Harris AWF. Neurofeedback for post-traumatic stress disorder: systematic review and meta-analysis of clinical and neurophysiological outcomes. European Journal of Psychotraumatology. 2023;14(2):2257435. PubMed
  8. Recio-Rodriguez JI, Fernandez-Crespo M, Sanchez-Aguadero N, et al. Neurofeedback to enhance sleep quality and insomnia: a systematic review and meta-analysis of randomized clinical trials. Frontiers in Neuroscience. 2024;18:1450163. PubMed
  9. Lambert-Beaudet F, Journault W-G, Rudziavic Provençal A, Bastien CH. Neurofeedback for insomnia: Current state of research. World Journal of Psychiatry. 2021;11(10):897-914. PubMed
  10. Systematic Review and Meta-Analysis on the Effects of Neurofeedback Training of Theta Activity on Working Memory and Episodic Memory in Healthy Population. 2022. PubMed

Research summaries on this page are provided for general educational information. The studies cited examine specific populations and research protocols and should not be interpreted as a guarantee that an individual will experience the same results. Neurofeedback research continues to evolve.

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