Neurofeedback, also known as EEG biofeedback or neurotherapy, is a non-invasive brain-training technique that helps individuals learn to self-regulate their brain activity in real time. This evidence-based approach uses specialized equipment to monitor brain waves and provide immediate feedback, enabling people to optimize their brain function for improved mental health, cognitive performance, and overall well-being.

As a specific type of biofeedback that focuses on the brain's electrical activity, neurofeedback has gained significant recognition in recent years for treating various neurological and psychological conditions. Through repeated training sessions, individuals can develop greater control over their brain states, leading to lasting improvements in symptoms and daily functioning.

Table of Contents

  • What Is Neurofeedback?
  • How Neurofeedback Works
  • Types of Brain Waves
  • The Neurofeedback Process
  • Conditions Treated with Neurofeedback
  • Research and Effectiveness
  • Types of Neurofeedback
  • What to Expect During Treatment
  • Finding a Qualified Provider
  • Cost and Insurance Coverage
  • Safety and Side Effects
  • Frequently Asked Questions
  • How Therapy Can Help

What Is Neurofeedback?

Neurofeedback is a therapeutic intervention that enables individuals to learn how to modify their brain activity through real-time monitoring and feedback. The electroencephalography (EEG) is recorded during the neurofeedback treatment. Then, its various components are extracted and fed to subjects using an online feedback loop in the form of audio, video, or their combination. This process allows people to become aware of their brain patterns and gradually learn to influence them consciously.

Real-time neurofeedback is a type of biofeedback that offers a non-invasive method by which to self-regulate neural activity. By continuously monitoring an individual's current brain state and delivering stimuli when self-modulation aligns with predefined target states, neurofeedback systems typically implement reinforcement-based learning, in which individuals receive contingent feedback to shape their neural activity.

The approach is based on the principle of neuroplasticity—the brain's ability to reorganize and form new neural connections throughout life. By providing immediate feedback about brain activity, neurofeedback helps individuals develop new, healthier brain patterns that can persist even after treatment ends.

How Neurofeedback Works

During neurofeedback training, sensors placed on the scalp measure electrical activity in the brain without sending any signals into the brain itself. By placing electrodes on the scalp, the electrical activity of the brain, known as EEG, can be recorded. In turn, EEG is generated by a specific type of synchronous activity of neurons which are known as pyramidal neurons, and the electrical output is thus reflected in the following areas of the skin where the electrodes are located.

The process involves several key components:

1. Brain Activity Measurement: EEG sensors detect electrical patterns produced by neurons communicating with each other

2. Signal Processing: Sophisticated software analyzes these patterns in real time

3. Feedback Delivery: Visual or auditory cues inform the individual when their brain produces desired patterns

4. Learning and Adaptation: Through repetition, the brain learns to produce beneficial patterns more readily

Neurons communicate through electrochemical signals, which appear as wave-like patterns known as brainwaves. These brainwaves can be recorded using electroencephalography (EEG), a non-invasive method that measures electrical activity through sensors attached to the scalp.

Types of Brain Waves

Understanding brain waves is essential for neurofeedback treatment. There are five main patterns of brain waves: DELTA, THETA, ALPHA, BETA, and GAMMA. Each brainwave state corresponds to a different state of awareness. We usually cycle in and out of these different brainwave states throughout the day and night. All brainwave states are essential but must be experienced at the right times and proportions.

Delta Waves (0.5-4 Hz)

Delta Waves (1-4 Hz) are slow brainwaves that begin to appear in stage 3 of the sleep cycle and, by stage 4, dominate almost all EEG activity. At this stage, healing and regeneration are stimulated and are considered essential for sleep's therapeutic properties. Excessive delta activity during waking hours may indicate brain injury or contribute to attention difficulties.

Theta Waves (4-8 Hz)

Theta waves (4-8 Hz) primarily involve daydreaming and sleep. Cortical theta is commonly seen in young children, but it typically appears in older children and adults during meditative, drowsy, or sleeping states.

Theta waves are strong during internal focus, hyper-vigilance, meditation, prayer, and spiritual awareness. It reflects the state between wakefulness and sleep and relates to the subconscious.

Alpha Waves (8-12 Hz)

Alpha waves (8-12 Hz) dominate during moments of quiet thought and are similar to meditative states. These brainwaves occur during deep relaxation, typically when the eyes are closed. It is an optimal time to program the mind for success and heightens your imagination, visualization, memory, learning, and concentration.

Beta Waves (12-30 Hz)

Beta waves are fast brain waves associated with active thinking, problem-solving, and focused mental activity. The fastest brainwaves are beta waves. The brain produces these waves during activities that require sustained focus, task completion, and executive functioning. An excess of beta waves can lead to anxiety and sleep disturbances.

Gamma Waves (30-100 Hz)

Gamma waves are the fastest brain waves and are associated with higher cognitive functions, including perception, consciousness, and information processing. They play a crucial role in binding different sensory inputs into coherent perception.

The Neurofeedback Process

Initial Assessment

Before beginning neurofeedback training, practitioners typically conduct a comprehensive assessment that may include:

  • Clinical Interview: Discussing symptoms, medical history, and treatment goals
  • qEEG Brain Mapping: The hypoarousal subtype is distinguished by elevated total power, augmented relative theta, and a high TBR, indicative of diminished cortical arousal. The delayed maturation subtype is characterized by increased slow-wave activity and reduced fast-wave activity, which suggests a postponement of central nervous system maturation. This quantitative analysis helps identify specific patterns of brain dysfunction
  • Baseline Measurements: Recording brain activity to establish starting points for training

Training Protocol Selection

Based on the assessment results, practitioners develop individualized treatment protocols. Neurofeedback treatment protocols mainly focus on the alpha, beta, delta, theta, and gamma treatment or a combination of them such as alpha/theta ratio, beta/theta ratio, etc. However, the most commonly used protocols are alpha, beta, theta, and alpha/theta ratio.

Training Sessions

A typical neurofeedback session involves:

1. Electrode Placement: Sensors are attached to specific locations on the scalp using conductive paste

2. Baseline Recording: Initial brain activity is measured

3. Active Training: The individual engages with feedback (games, movies, or sounds) while attempting to influence their brain patterns

4. Progress Monitoring: Real-time adjustments and session data recording

During this procedure, the subject becomes aware of the changes occurring during training and will be able to assess his/her progress in order to achieve optimum performance. For instance, the subject tries to improve the brain patterns based on the changes that occur in the sound or movie.

Conditions Treated with Neurofeedback

ADHD (Attention-Deficit/Hyperactivity Disorder)

ADHD remains one of the most researched applications of neurofeedback. A total of 38 RCTs (2472 participants aged 5 to 40 years) were included. Probably blinded reports of ADHD total symptoms showed no significant improvement with neurofeedback (k = 20; n = 1214; SMD, 0.04; 95% CI, -0.10 to 0.18). A small significant improvement was seen when analyses were restricted to RCTs using established standard protocols (k = 9; n = 681; SMD, 0.21; 95% CI, 0.02 to 0.40).

Recent research has shown that specific protocols may be more effective:- Most neurofeedback therapies surpassed placebo in ADHD symptoms. In the acceptability outcome, five neurofeedback therapies (HEG, SCP training, TBR training, SMR training, and active control) outperformed the inactive control, physical activity, and EMG therapies.

Seventeen RCT studies were identified, totaling 939 participants. We observed significant improvements in global executive function (p < 0.055), inhibitory control (p < 0.0001) and working memory (p < 0.05) following NFT.

Post-Traumatic Stress Disorder (PTSD)

Neurofeedback has emerged as a promising treatment for PTSD, particularly for individuals who haven't responded to traditional therapies. All included studies showed an advantage of NFB over control conditions in reducing symptoms of PTSD, with indications of improvement in symptoms of anxiety and depression and related neurophysiological changes. Meta-analysis of the pooled data shows a significant reduction in PTSD symptoms post-treatment SMD of −1.76 (95% CI −2.69, −0.83), and the mean remission rate was higher in the NFB group (79.3%) compared to the control group (24.4%).

In patients who have PTSD, those portions of the brain which control emotional regulation (prefrontal cortex, hippocampus, and amygdala) work less effectively—with the prefrontal cortex and hippocampus decreasing in volume. The amygdala, however, becomes much more active in PTSD patients.

Anxiety Disorders

The greatest improvement was reported for the anxiety questionnaire, for which 69% (68/99) of participants moved from abnormal to healthy score ranges. The most prominent improvement was observed in participants with abnormal baseline anxiety or child ADHD scores. Neurofeedback helps individuals learn to produce brain wave patterns associated with calm, relaxed states, particularly by enhancing alpha waves and reducing excessive beta activity.

Depression

Depression, anxiety, PTSD risk, and QOL improved significantly by the 10th and 20th session; suicidal risk showed nonsignificant reduction. Use of a more feasible interventional procedure established a foundation for use in clinical settings for the population. Neurofeedback for depression often focuses on correcting asymmetries in frontal brain activity and enhancing overall neural regulation.

Sleep Disorders

Most of the studies analyzed (5 out of 7) use a NF training protocol based on maintaining alpha waves in a range between 8 and 12 Hz. The main characteristic of this brain rhythm is its association with the visual system, recorded mainly in the occipital area, which is clearly increased when we close our eyes. Neurofeedback can help regulate sleep-wake cycles and improve sleep quality by training appropriate brain wave patterns.

Other Applications

Neurofeedback has shown promise for various other conditions:

  • Epilepsy: Reducing seizure frequency through SMR training
  • Chronic Pain: Neurofeedback has been investigated as a potential treatment for chronic pain with varying durations and frequencies of sessions reported in the literature. Some studies have investigated the potential mechanisms of neurofeedback training for chronic pain, specifically targeting the modulation of EEG activity in brain regions associated with pain processing.
  • Autism Spectrum Disorder: Improving social functioning and communication
  • Traumatic Brain Injury: Supporting cognitive recovery and rehabilitation
  • Peak Performance: Enhancing athletic and cognitive performance in healthy individuals

Research and Effectiveness

Current Evidence Base

The effectiveness of neurofeedback varies by condition and protocol used. Recent meta-analyses provide important insights:

For ADHD: A meta-analysis of seven studies with 370 children and adolescents found a small-to-medium improvement in working memory after neurofeedback, with no publication bias overall but high heterogeneity. A dose-response effect was observed: treatments over 21 hours showed benefits, while shorter ones did not.

For PTSD: Meta-analysis of the pooled data shows a significant reduction in PTSD symptoms post-treatment SMD of −1.76 (95% CI −2.69, −0.83), and the mean remission rate was higher in the NFB group (79.3%) compared to the control group (24.4%).

Protocol-Specific Outcomes: Based on meta-analysis studies, three standard NF protocols (theta/beta, sensorimotor rhythm, and slow cortical potential) have been identified that have proven effective in the treatment of ADHD.

Mechanisms of Action

The non-invasive nature of neurofeedback training makes it an attractive alternative to pharmacological intervention and other invasive methods, particularly in clinical settings. Neurofeedback has been shown to improve hyperactivity regulation in attention-deficit hyperactivity disorder (ADHD), as well as alleviate symptoms in major depressive disorder (MDD) and post-traumatic stress disorder (PTSD). In addition, it has demonstrated effectiveness in epilepsy by reducing dysregulated brainwave patterns and has aided stroke rehabilitation patients in regaining motor control.

Types of Neurofeedback

Frequency/Power Neurofeedback

There are 7 types of Neurofeedback for the treatment of various disorders. The most frequently used neurofeedback is frequency/power neurofeedback. This technique typically includes the use of 2 to 4 surface electrodes, sometimes called "surface neurofeedback." It is used to change the amplitude or speed of specific brain waves in particular brain locations to treat ADHD, anxiety, and insomnia.

Slow Cortical Potential (SCP) Training

SCP neurofeedback trains individuals to control slow electrical shifts in the brain, which are related to cortical excitability and attention regulation. This approach has shown particular promise for ADHD and epilepsy.

Low Energy Neurofeedback System (LENS)

Low-energy neurofeedback system (LENS) delivers a weak electromagnetic signal to change the patient's brain waves while they are motionless with their eyes closed. This type of neurofeedback has been used to treat traumatic brain injury, ADHD, insomnia, fibromyalgia, restless legs syndrome, anxiety, depression, and anger.

Z-Score Neurofeedback

Live Z-score neurofeedback is used to treat insomnia. It introduces the continuous comparison of variables of brain electrical activity to a systematic database to provide continuous feedback.

fMRI Neurofeedback

While most neurofeedback uses EEG, functional MRI neurofeedback allows for training of deeper brain structures. Real-time functional magnetic resonance imaging (rt-fMRI) can target these deeper brain regions, evaluate their activity, and evaluate effects of such therapies as NF using accepted PTSD instruments such as the clinician-administered PTSD scale (CAPS-5) and the PTSD Checklist for DSM-5 (PCL-5). Early studies on the use of NF EEG with fMRI have demonstrated an effect on these areas of the brain.

What to Expect During Treatment

Session Structure

A typical neurofeedback session lasts 30-60 minutes and includes:

1. Preparation (5-10 minutes): Electrode placement and equipment setup

2. Training (20-40 minutes): Active neurofeedback with breaks as needed

3. Review (5-10 minutes): Progress discussion and homework assignments

Treatment Duration

The intervention duration varied from 4 to 12 weeks, with a frequency of 2 to 5 sessions per week, and each session lasting 20 to 30 minutes. Intensive EEG neurofeedback training, conducted over a short period, can successfully modulate feedback characteristics and yield improvements in target behaviors.

Research suggests optimal outcomes with:- Lin et al. (2024), in their meta-analysis, introduced the notion of an adequate training time, defined as 300 min or more of NFB training, to achieve successful outcomes in memory in the elderly.

For negative symptoms, better outcomes were seen with intervention periods ≥8 weeks, frequency ≥4 times/week, and disease duration <5 years (SMD=-1.34, -1.68, -1.26). A regimen of ≥4 sessions/week for ≥8 weeks, targeting SMR and beta waves, is recommended.

What You'll Experience

During neurofeedback training:

  • You'll sit comfortably in a chair while sensors monitor your brain activity
  • You may watch a movie, play a game, or listen to music that responds to your brain patterns
  • The feedback helps your brain learn to produce desired patterns
  • Most people find sessions relaxing and enjoyable
  • No electrical current enters your brain—the system only reads activity

Finding a Qualified Provider

Certification Standards

The Biofeedback Certification International Alliance (BCIA) sets the gold standard for neurofeedback certification. Requirements include:

To qualify for the BCN, you must demonstrate a Bachelor's level degree in a health care related field. Approved health care fields include: psychotherapy, psychology, nursing (including 2-year registered nurses with license; not including LVNs or LPNs), physical therapy, occupational therapy, rehabilitation, social work, counseling, chiropractic, exercise physiology, recreational therapy, speech pathology, physician's assistant (proof of certification or license needed), and sports medicine. The following fields require a master's degree: music therapy and counseling education (M.Ed. in counseling).

Training Requirements

Take a 36-hour didactic training course. Neurofeedback Case Studies with mentor – 10 Presentations (BCIA will also allow for 1 contact hour and 2 case conference presentation hours if mentees attend BCIA Neurofeedback webinars).

Questions to Ask Potential Providers

When selecting a neurofeedback provider, consider asking:

  • Are you BCIA certified in neurofeedback?
  • How many years of experience do you have?
  • What conditions do you typically treat?
  • What type of assessment do you perform before treatment?
  • What protocols do you use?
  • How do you measure progress?
  • What is your typical treatment success rate?

Cost and Insurance Coverage

Treatment Costs

Neurofeedback therapy typically costs between $100-200 per session with most LENS practitioners charging $120-150 per individual session. Individual LENS neurofeedback sessions generally range from $100-200 depending on your location and practitioner experience. In Los Angeles, most certified LENS practitioners charge between $120-150 per session.

Total treatment costs vary based on:

  • Number of sessions needed (typically 20-40)
  • Geographic location
  • Provider credentials and experience
  • Type of neurofeedback used
  • Whether qEEG assessment is included

In-clinic neurofeedback sessions for ADHD typically cost $80–$200 per session in the US as of 2024, with total program costs ranging from $2,000–$6,000+ for 20–40 sessions. Upfront assessments like qEEG brain mapping can add $300–$1,000 but help personalize your treatment plan and track progress over time.

Insurance Coverage

The insurance landscape for neurofeedback is, to put it mildly, a mixed bag. "The hard truth is that there are no major private insurance companies in Colorado (or the rest of the country, as far as I know) that regularly reimburse for neurofeedback."

However, some options may be available:- Traditional insurance coverage for neurofeedback varies significantly between providers and plans. While some progressive insurance companies recognize neurofeedback as a legitimate therapeutic intervention, many still consider it alternative or experimental treatment. However, several pathways exist for insurance reimbursement: Some PPO plans offer out-of-network benefits for neurofeedback · Flexible Spending Accounts (FSA) often cover neurofeedback expenses · Health Savings Accounts (HSA) typically approve neurofeedback as qualified medical expenses.

Making Treatment Affordable

Many providers offer:

  • Package deals with reduced per-session rates
  • Payment plans to spread costs over time
  • Sliding scale fees based on income
  • Group training sessions at lower rates

Safety and Side Effects

General Safety Profile

Decades of peer-reviewed studies confirm neurofeedback's excellent safety record. Adverse events are typically mild, transient, and self-resolving. In fact, neurofeedback is used safely in children, adults, seniors, and even clinical populations such as those with ADHD, epilepsy, or traumatic brain injury. The consensus among professional organizations like the International Society for Neuroregulation & Research (ISNR) is that when administered by trained clinicians using modern equipment, neurofeedback is among the safest brain-based interventions available.

Potential Side Effects

While serious side effects are extremely rare, some people may experience temporary:

The common neurofeedback side effects include fatigue, headaches, elevated stress, and slight dizziness or disorientation. The good news is that not everyone experiences side effects – and even those who do often only have minor, temporary discomfort.

Stress: You may experience nervousness about an electrode being attached to your head or feel anxious during the session, but there's nothing to worry about because neurofeedback is a safe and non-invasive procedure. Headaches or dizziness: You may experience dizziness during or after the training, particularly when training faster (high-frequency) waves. Distractedness: You may temporarily have trouble concentrating, but this symptom is usually mild and diminishes within a few hours after the session.

Managing Side Effects

A 2023 review in Frontiers in Human Neuroscience reaffirmed that adverse effects in neurofeedback are rare and typically short-lived when sessions are properly supervised. Feeling mentally tired, emotionally open, or unusually calm after training isn't a problem—it's evidence of your nervous system reorganizing. If a client ever feels "off," the protocol can be recalibrated within minutes.

Special Considerations

Your practitioner needs to know about neurological conditions, medication use, or sleep issues that might influence how your brain reacts. For instance: Individuals with migraines or epilepsy may require slower progression. Those recovering from concussions or traumatic brain injuries need extra hydration and pacing. Clients with PTSD benefit from stabilizing alpha before exploring deeper theta training. Stimulant or antidepressant users may experience altered thresholds; timing of sessions may be adjusted accordingly.

Frequently Asked Questions

How long does it take to see results from neurofeedback?

Most clients see initial improvements within 5-10 LENS sessions, with optimal results typically achieved after 15-25 sessions. However, individual response varies based on the condition being treated, severity of symptoms, and consistency of training.

Is neurofeedback FDA approved?

The FDA has cleared certain neurofeedback devices for relaxation training and stress reduction. While this doesn't guarantee insurance coverage, it does lend credibility to the treatment in these areas. Many neurofeedback applications are considered "off-label," though they may still be effective and appropriate.

Can neurofeedback be done at home?

Yes, home neurofeedback options are increasingly available. At-home neurofeedback options (devices around $250–$1,000+ or clinician-guided plans at $150–$700/month) can reduce overall cost but may offer less support and different outcomes. However, professional guidance is recommended, especially initially.

What's the difference between neurofeedback and biofeedback?

Neurofeedback is a type of biofeedback and is sometimes referred to as EEG Biofeedback. Biofeedback treatment measures and records physiological functions like hand temperature, sweat gland activity of the fingers, muscle tension, and heart rate variability. Neurofeedback therapy, on the other hand, measures and records instantaneous activity in the brain.

Who should not do neurofeedback?

While neurofeedback is generally safe, certain individuals should consult with their healthcare provider first, including those with:

  • Severe psychiatric conditions requiring immediate intervention
  • Uncontrolled seizure disorders
  • Recent traumatic brain injury
  • Certain neurological conditions

Does neurofeedback have lasting effects?

Prior work suggests that physiological and behavioral effects of reinforcement-based neurofeedback training persist beyond the duration of feedback sessions.

Within-group NF effects on inattention were of medium effect size (ES) (SMD = 0.64) at post-treatment and increased to a large ES (SMD = 0.80) at FU.

How Therapy Can Help

Neurofeedback represents a valuable addition to the mental health treatment landscape, offering a non-invasive, medication-free option for various conditions. While it shows particular promise for ADHD, PTSD, anxiety, and other neurological conditions, it's important to work with qualified professionals who can develop personalized treatment plans based on comprehensive assessment.

For many individuals, neurofeedback works best as part of an integrated treatment approach that may include psychotherapy, lifestyle modifications, and when appropriate, medication. The key is finding the right combination of treatments for your unique needs.

If you're interested in exploring neurofeedback as a treatment option, consider consulting with a licensed mental health professional who can help you determine whether this approach might be beneficial for your specific situation. Remember that healing takes time, and the journey toward better brain health is a gradual process that requires patience and commitment.

References:

  1. Askovic, M., Soh, N., Elhindi, J., & Harris, A. W. F. (2023). Neurofeedback for post-traumatic stress disorder: Systematic review and meta-analysis of clinical and neurophysiological outcomes. European Journal of Psychotraumatology, 14(2), 2257435. https://doi.org/10.1080/20008066.2023.2257435
  2. Association for Applied Psychophysiology and Biofeedback (AAPB). (2024). Evidence-based practice in biofeedback and neurofeedback (4th ed.). https://www.aapb.org/evidence-based-practice
  3. Biofeedback Certification International Alliance (BCIA). (2024). Standards for performing neurofeedback. https://www.bcia.org/standards
  4. Enriquez-Geppert, S., Huster, R. J., & Herrmann, C. S. (2019). Neurofeedback as a treatment intervention in ADHD: Current evidence and practice. Current Psychiatry Reports, 21(6), 46. https://doi.org/10.1007/s11920-019-1021-4
  5. Himmelmeier, L., & Werheid, K. (2024). Neurofeedback training in children with ADHD: A systematic review of personalization and methodological features facilitating training conditions. Clinical EEG and Neuroscience, 55(4), 445-459. https://doi.org/10.1177/15500594241279580
  6. International Society for Neuroregulation & Research (ISNR). (2023). Clinical practice guidelines for neurofeedback. https://www.isnr.org/clinical-guidelines
  7. Lee, C. S. C., Chen, T., Gao, Q., Hua, C., Song, R., & Huang, X. P. (2023). The effects of theta/beta-based neurofeedback training on attention in children with attention deficit hyperactivity disorder: A systematic review and meta-analysis. Child Psychiatry & Human Development, 54(6), 1577-1606. https://doi.org/10.1007/s10578-022-01361-4
  8. National Center for Biotechnology Information. (2024). Neurofeedback: A comprehensive review on system design, methodology and clinical applications. PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC4892319/
  9. National Institute of Mental Health (NIMH). (2022). Attention-deficit/hyperactivity disorder (ADHD). https://www.nimh.nih.gov/health/topics/attention-deficit-hyperactivity-disorder-adhd
  10. National Institute on Aging. (2023). Cognitive health and older adults. https://www.nia.nih.gov/health/brain-health/cognitive-health-and-older-adults
  11. Nicholson, A. A., Densmore, M., Frewen, P. A., Neufeld, R. W., Théberge, J., Jetly, R.,... & Ros, T. (2023). Homeostatic normalization of alpha brain rhythms within the default-mode network and reduced symptoms in post-traumatic stress disorder following a randomized controlled trial of electroencephalogram neurofeedback. Brain Communications, 5(2), fcad068. https://doi.org/10.1093/braincomms/fcad068
  12. Paban, V., Feraud, L., Weills, A., & Duplan, F. (2024). Exploring neurofeedback as a therapeutic intervention for subjective cognitive decline. European Journal of Neuroscience, 60(12), 7164-7182. https://doi.org/10.1111/ejn.16621
  13. Peterson, C. B., Roche, A., Pagan, J., Bahamon, M., & Schwab, Z. J. (2024). Long-term effects of neurofeedback and hyperbaric oxygen therapy on traumatic brain injury: A principal component analysis (PCA)-based secondary analysis. Cureus, 16(11), e74127. https://doi.org/10.7759/cureus.74127
  14. Recio-Rodriguez, J. I., Fernandez-Crespo, R., Sanchez-Aguadero, N., Gonzalez-Sanchez, S., Garcia-Yu, I. A., Alonso-Dominguez, R.,... & Rihuete-Galve, M. I. (2024). Neurofeedback to enhance sleep quality and insomnia: A systematic review and meta-analysis of randomized clinical trials. Frontiers in Psychiatry, 15, 1339255. https://doi.org/10.3389/fpsyt.2024.1339255
  15. Tosti, B., Corrado, S., Mancone, S., Di Libero, T., Rodio, A., Andrade, A., & Diotaiuti, P. (2024). Integrated use of biofeedback and neurofeedback techniques in treating pathological conditions and improving performance: A narrative review. Frontiers in Neuroscience, 18, 1358481. https://doi.org/10.3389/fnins.2024.1358481
  16. U.S. Department of Veterans Affairs/Department of Defense. (2023). VA/DoD clinical practice guideline for the management of posttraumatic stress disorder and acute stress disorder (Version 4.0). https://www.healthquality.va.gov/guidelines/mh/ptsd/
  17. Voigt, J. D., Mosier, M., & Tendler, A. (2024). Systematic review and meta-analysis of neurofeedback and its effect on posttraumatic stress disorder. Frontiers in Psychiatry, 15, 1323485. https://doi.org/10.3389/fpsyt.2024.1323485
  18. Westwood, S. J., Aggensteiner, P. M., Kaiser, A., Nagy, P., Donno, F., Merkl, D.,... & Cortese, S. (2025). Neurofeedback for attention-deficit/hyperactivity disorder: A systematic review and meta-analysis. JAMA Psychiatry, 82(2), 118-129. https://doi.org/10.1001/jamapsychiatry.2024.3702
  19. Wu, Q., Chen, T., Wang, Z., Chen, S., Zhang, J., Bao, J.,... & Tong, Z. (2024). Comparative efficacy of neurofeedback interventions for attention-deficit/hyperactivity disorder in children: A network meta-analysis. Brain and Behavior, 14(12), e70194. https://doi.org/10.1002/brb3.70194
  20. Zhong, X., Yuan, X., Dai, Y., Zhang, X., & Jiang, C. (2025). Neurofeedback training for executive function in ADHD children: A systematic review and meta-analysis. Scientific Reports, 15, 94242. https://doi.org/10.1038/s41598-025-94242-4