Train Your Brain Toward Healthier Patterns

Neurofeedback is the most well-studied modality within neurotherapy. It uses real-time displays of brain activity — typically through a video game, movie, or audio signal — to teach the brain to self-regulate. When the brain produces the desired patterns, the feedback is positive; when it drifts, the feedback pauses. Over time, the brain learns to sustain healthier states on its own.

The strongest evidence for neurofeedback exists in the treatment of ADHD. A meta-analysis by Van Doren et al. (2019) found that improvements in inattention were sustained at follow-up assessments conducted 6–12 months after training ended, suggesting durable effects beyond the training period. Krepel et al. (2020) demonstrated that when neurofeedback protocols are personalized using QEEG data, remission rates can reach approximately 55% — significantly higher than non-personalized approaches.

A typical course of neurofeedback involves 30–40 sessions, usually conducted 1–2 times per week. It is considered safe and non-invasive, with the most commonly reported side effect being temporary fatigue.

tDCS delivers a very mild, constant electrical current through electrodes placed on the scalp. The current is so gentle that most individuals feel only a slight tingling. It works by subtly adjusting the excitability of targeted brain regions — making neurons slightly more or less likely to fire — which can support improvements in attention, impulse control, and executive function.

A comprehensive meta-analysis by Tung et al. (2025) found that tDCS produced significant improvements in ADHD symptoms, particularly in measures of impulsivity and executive function. Zheng et al. (2024) conducted a transdiagnostic meta-analysis confirming benefits across multiple conditions, including ADHD and depression. Salehinejad et al. (2019) further demonstrated that tDCS can improve a range of neuropsychological deficits, including working memory and cognitive flexibility.

Regarding safety in pediatric populations, Buchanan et al. (2021) conducted a systematic review and found that tDCS is generally well-tolerated in children and adolescents. The most common side effects are mild and transient, including tingling, itching, or redness at the electrode site.

While tDCS uses a constant current, tACS delivers a gently oscillating current at specific frequencies. This allows clinicians to target particular brainwave rhythms — for example, encouraging alpha waves associated with calm focus, or beta waves associated with sustained attention. Think of it as gently "tuning" the brain's natural rhythms toward a healthier balance.

In a notable randomized controlled trial, Farokhzadi et al. (2021) compared tACS directly to methylphenidate (Ritalin) in children with ADHD. The study found that tACS produced comparable improvements in attention and behavioral symptoms, suggesting it may offer a non-pharmacological alternative worth exploring for some families. The stimulation is imperceptible to most individuals during the session.

tVNS stimulates the vagus nerve through a small device placed on the ear. The vagus nerve is a major pathway connecting the brain to the body's autonomic nervous system, which governs our stress response, heart rate, and digestion. By stimulating this nerve, tVNS may help improve emotional regulation, reduce anxiety, and support overall nervous system balance.

A safety meta-analysis by Kim et al. (2022) found that tVNS is well-tolerated with a low incidence of adverse events. The most common side effects are mild and include tingling at the stimulation site. Research into its applications for ADHD, anxiety, and autonomic regulation is ongoing and encouraging.

Photobiomodulation uses specific wavelengths of near-infrared light, applied to the scalp, to support cellular energy production in the brain. The light is absorbed by mitochondria — the energy centers of cells — which may enhance blood flow, reduce neuroinflammation, and support overall brain metabolism.

A meta-analysis by Lee et al. (2023) found that PBM was associated with improvements in cognitive function, including attention and processing speed. While this is a newer modality with a smaller evidence base, the mechanism is well-understood at the cellular level, and the safety profile is favorable — the treatment is painless and has no known significant side effects.