Training Your Brain to Change Itself

The Pilot Who Retrained His Brain

In the 1960s, a NASA researcher named Barry Sterman was studying sleep patterns in cats. He'd trained a group of cats to produce a specific brainwave frequency — a 12–15 Hz rhythm over the sensorimotor cortex, which he called the sensorimotor rhythm (SMR). The cats that learned to produce more SMR became unusually calm and focused.

Then something unexpected happened. NASA asked Sterman to study the effects of rocket fuel exposure on seizure susceptibility. He exposed a group of cats to monomethylhydrazine, a compound known to cause seizures. Most of the cats seized, as expected. But a few didn't.

Sterman checked his records. The seizure-resistant cats were the same ones he'd previously trained to produce SMR. The neurofeedback training had somehow raised their seizure threshold.

This accidental discovery launched a field. If brainwave training could protect against seizures in cats, what could it do for humans?

What Neurofeedback Actually Is

Neurofeedback is a form of biofeedback that uses real-time displays of brain activity — typically measured through electroencephalography (EEG) — to teach the brain to self-regulate its own electrical patterns.

Here's how a typical session works:

Sensors are placed on your scalp (usually 1–19 electrodes, depending on the system). These sensors detect the electrical activity of your brain — the same brainwaves that a neurologist would measure in a clinical EEG.

This activity is fed into software that translates it into something you can perceive: a movie that plays smoothly when your brain produces the desired pattern and pauses when it doesn't. A sound that plays when you're in the target state. A game where your character moves forward only when your brainwaves cooperate.

You don't consciously "do" anything. You just sit and watch. Your brain, through operant conditioning, gradually learns which states produce the reward — and produces more of them.

It's like going to the gym for your brain. Except you don't choose which muscles to flex. Your brain figures it out.

The Brainwave Primer

To understand neurofeedback protocols, you need to know the basic brainwave bands:

Wave	Frequency	Associated State
Delta	0.5–4 Hz	Deep sleep, healing
Theta	4–8 Hz	Drowsiness, creativity, meditation
Alpha	8–12 Hz	Relaxed alertness, calm focus
SMR	12–15 Hz	Still, focused attention
Beta	15–30 Hz	Active thinking, problem-solving
High Beta	30–40 Hz	Anxiety, hypervigilance, overthinking
Gamma	40+ Hz	Peak cognition, insight, integration

Different neurofeedback protocols train different bands. An ADHD protocol might reward SMR and low beta (to increase focus) while inhibiting theta (to reduce daydreaming). An anxiety protocol might reward alpha (calm) while inhibiting high beta (overthinking).

The Evidence: What Works

ADHD — The Strongest Case

Neurofeedback for ADHD has the most robust evidence base. A 2019 meta-analysis in the European Child & Adolescent Psychiatry journal analyzed 10 RCTs and found that neurofeedback produced significant improvements in inattention that were maintained at follow-up.

The American Academy of Pediatrics has rated neurofeedback as a "Level 1 — Best Support" intervention for ADHD, the highest evidence rating. This puts it alongside medication in terms of evidence quality.

What makes this finding remarkable is the durability. Medication works only while you take it. Several studies have shown that neurofeedback improvements persist for 6–12 months after training ends — suggesting the brain has genuinely learned a new pattern, not just been temporarily modified.

Anxiety — Promising

Alpha-theta neurofeedback — a protocol that trains the brain to produce more alpha and theta waves while reducing high beta — has shown promise for anxiety disorders. A 2019 study in NeuroRegulation found that 20 sessions of alpha-theta training significantly reduced anxiety symptoms in a clinical population.

The mechanism is intuitive: anxiety is often associated with excess high-frequency beta activity — the electrical signature of a brain that can't stop worrying. Training the brain to access calmer states reduces this hyperactivation.

Insomnia — Emerging

SMR training has been studied for insomnia, based on the logic that the sensorimotor rhythm is associated with calm, still wakefulness — the state just before sleep onset. A 2018 RCT found that SMR neurofeedback improved sleep quality and reduced sleep onset latency in chronic insomnia patients.

Peak Performance — Intriguing but Thin

There's a growing industry of neurofeedback for peak performance — athletes, executives, musicians seeking to optimize their brain states. The anecdotal reports are impressive. The controlled evidence is sparse.

A 2017 study found that alpha/theta training improved musical performance in conservatory students. Several studies have shown improvements in attention and cognitive flexibility in healthy adults. But the field lacks the large, rigorous RCTs that would move these findings from "interesting" to "established."

The Different Systems

Not all neurofeedback is the same. The field has fragmented into several approaches:

Traditional Frequency Training. The oldest approach. Specific electrode placements, specific frequency targets. Highly protocol-driven. This is what most of the ADHD research uses.

LORETA (Low Resolution Electromagnetic Tomography). Uses 19 channels to create a 3D map of brain activity and targets specific brain regions. More precise, more expensive, more complex.

Infra-Low Frequency (ILF) Training. Developed by Sue and Siegfried Othmer, this approach trains very slow cortical potentials below 0.5 Hz. Proponents claim it addresses the brain's fundamental regulatory mechanism. The evidence base is growing but smaller than traditional approaches.

NeurOptimal. A "nonlinear dynamical" system that claims to work differently from other neurofeedback — it doesn't target specific frequencies but instead provides feedback whenever the brain's activity shows signs of turbulence. It's marketed as a "defragmenter" for the brain. The clinical evidence is limited compared to traditional protocols.

What a Course of Treatment Looks Like

A typical neurofeedback course involves:

• Assessment — Usually a quantitative EEG (qEEG) that maps your brain's electrical activity across 19 sites and compares it to a normative database. This identifies which areas are over- or under-active.
• Protocol design — Based on the assessment, the clinician selects training sites and target frequencies.
• Training sessions — Usually 30–40 sessions, 2–3 times per week. Each session lasts 30–45 minutes. Most people notice changes around session 10–15.
• Reassessment — A follow-up qEEG to measure changes.

Cost varies wildly: $100–$250 per session, with most courses running 30–40 sessions. Insurance coverage is inconsistent. Some clinics offer home rental systems that reduce costs significantly.

The Limitations

Neurofeedback is not a cure-all, and the field has some genuine problems:

Practitioner variability. The difference between a skilled neurofeedback clinician and an undertrained one is enormous. Protocol selection, electrode placement, and clinical judgment all matter. A wrong protocol can make symptoms worse.

Sham control challenges. Designing a convincing placebo for neurofeedback is difficult. If the control group watches a movie that plays randomly rather than contingently on their brainwaves, they may notice something is off. This methodological challenge has plagued the field.

Overpromising. Some practitioners and device manufacturers make claims that far exceed the evidence — promising cures for autism, traumatic brain injury, or cognitive decline based on case reports and uncontrolled studies.

The Honest Take

Neurofeedback is a legitimate, evidence-based intervention for specific conditions — particularly ADHD, where the evidence is strong. For anxiety, insomnia, and trauma-related dysregulation, the evidence is promising but less robust.

It's not fast. It's not cheap. And it requires a skilled practitioner who can match the right protocol to the right brain.

But the core premise — that the brain can learn to regulate its own activity when given real-time feedback — is sound neuroscience. Your brain is plastic. It responds to training. Neurofeedback is simply a mirror, held up at the right angle, that lets the brain see itself and adjust.

Barry Sterman's cats figured it out in a lab in the 1960s. Six decades later, the field is still working out the details. But the principle holds: the brain can change itself, if you show it how.

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Sources: Sterman, "Basic concepts and clinical findings in the treatment of seizure disorders with EEG operant conditioning," Clinical Electroencephalography, 2000. Van Doren et al., "Sustained effects of neurofeedback in ADHD," European Child & Adolescent Psychiatry, 2019. American Academy of Pediatrics, "Evidence-Based Child and Adolescent Psychosocial Interventions," 2012. Marzbani et al., "Neurofeedback: A Comprehensive Review," Basic and Clinical Neuroscience, 2016.