What is the problem in the ADHD brain?

ADHD brains often show imbalances in brain frequencies, particularly issues with regulation that affect focus and impulse control. The page highlights four main brain frequencies involved in these challenges.

What are the four main brain frequencies?

Four key brain frequencies central to ADHD issues, which neurofeedback targets to restore balance and improve functioning. The four main brain frequencies are beta, alpha, theta, and delta waves, which regulate attention, relaxation, drowsiness, and deep sleep respectively. **Beta Waves** Beta represents the highest frequency, active during mental tasks when mind and body are busy, short-term memory is engaged, and focus is required. ADHD often shows insufficient beta relative to slower waves, hindering concentration. **Alpha Waves** Alpha is the second highest frequency, present in relaxed but alert states like eyes-closed rest. In ADHD, excess alpha can signal poor inhibition of distractions. **Theta Waves** Theta waves occur during drowsiness or low attention, common in ADHD brains and targeted by neurofeedback to reduce for better focus. They link to creativity but excess impairs task engagement. **Delta Waves** Delta, the slowest frequency, dominates deep sleep and repair; imbalances contribute to ADHD-related regulation issues addressed via QEEG mapping and HEG training.

What is HEG Neurofeedback and how does it work?

HEG Neurofeedback is a quick and powerful method that boosts blood flow to the brain, enhancing mental and emotional functioning. It trains the brain like a muscle, with real-time feedback during sessions.

What happens in nctNeurofeedback Step 2 training sessions?

Step 2 consists of 30-40 sessions, each 45-50 minutes, where the child trains brain activity through neurofeedback games and exercises. Therapists combine this with cognitive and behavioral support.

What results can I expect from nctNeurofeedback for ADHD?

Results include improved focus, self-confidence, and IQ, with no medications or side effects. The unique Langford method empowers children to control their brain activity long-term.

Neurofeedback for ADHD in London
Medication-Free ADHD Treatment for Children and Adults

What Is Happening in the ADHD Brain?

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ADHD is often misunderstood as a behavioural or motivational problem. Children and adults with ADHD are frequently labelled as difficult, unfocused, or lazy. Parents may feel they have failed their child, and adults often internalise years of frustration and self-blame.

In reality, ADHD is a neurophysiological condition.

Many individuals with ADHD are highly intelligent and creative, yet show imbalances in brainwave activity, particularly involving slow-wave (Theta) activity in regions of the brain responsible for attention, executive control, and regulation. These patterns interfere with the brain’s ability to sustain focus, organise information, and regulate behaviour and emotion.
These brain states can be objectively measured using EEG, the same technology that allows us to train both children and adults to improve their own brainwave regulation through neurofeedback (1).

ADHD affects attention, regulation, and cognitive control. The challenge is performance, not intelligence or potential.

Welcome to the nctNeurofeedback Clinic, a specialist clinic offering evidence-based, medication-free ADHD treatment for both children and adults. Our clinical focus is on treating ADHD without medication or side effects, using the Yael Langford nctNeurofeedback Method, a neuroscience-led approach developed specifically for attentional and regulatory difficulties.
We work with children, adolescents, and adults who are seeking effective ADHD therapy, including those actively looking for natural treatment for ADHD or ADHD without medication.

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“Stuck in Theta”: Why Concentration Is So Difficult

People with ADHD tend to spend more time than typical in a Theta-dominant state. Theta is associated with daydreaming, internal focus, creativity, and reduced external attention. While valuable in the right context, excessive or poorly regulated Theta activity makes it extremely difficult to concentrate, particularly in structured environments such as school, work, or sustained tasks.

Children may respond with hyperactive behaviour as an unconscious attempt to stimulate the brain into a more alert state. Adults often compensate through over-effort, anxiety, constant movement, or mental exhaustion.
The difficulty is not intelligence or willingness - it is the brain’s inability to shift efficiently out of Theta when focus is required.

Neurofeedback for ADHD: Developing Self-Regulation Capacity

Neurofeedback works by teaching the brain - through real-time feedback - how to regulate itself more effectively.2 Over time, these changes become internalised and transferable to daily life.

Research Evidence Supporting Neurofeedback for ADHD

Neurofeedback for ADHD is supported by a substantial body of clinical research examining specific, measurable outcomes related to attention, focus, and cognitive performance.

EEG neurofeedback studies have demonstrated improvements in sustained attention and concentration, including reduced attentional variability on continuous performance tasks and related objective measures¹,². These changes reflect improved consistency of focus during cognitively demanding activities, directly relevant to difficulties experienced in academic, professional, and everyday settings.

Research has also shown improvements on standardised cognitive assessments following neurofeedback training, including gains in working memory, processing speed, and executive functioning³. These findings suggest changes in underlying cognitive efficiency rather than short-term behavioural compensation.
Studies examining prefrontal regulation, including HEG neurofeedback research, have reported improvements in attentional control alongside corresponding changes in neurophysiological measures⁴. These results link functional improvements in focus and impulse regulation with measurable changes in brain activity in regions associated with executive control.

Importantly, research has also examined the durability of these changes. Follow-up studies indicate that improvements are maintained beyond the training period. In a long-term outcome study, Joel Lubar reported that approximately 80 percent of participants maintained gains ten years after completing neurofeedback training, with sustained improvements evident in both neurophysiological measures and cognitive testing outcomes.

ADHD Frequently asked questions

The brain functions across several frequency bands, each associated with different cognitive and emotional states: Beta – Active thinking, focus, problem-solving, and short-term memory Alpha – Calm alertness, efficient learning, long-term memory integration Theta – Creativity, imagination, insight, and access to the subconscious Delta – Deep, restorative sleep and certain meditative states ADHD is not about having the “wrong” frequencies, but about regulation and timing - the ability to access the right state at the right time.

HEG neurofeedback, short for hemoencephalography, focuses on training oxygen patterns in the prefrontal cortex. This region plays a central role in attention, focus, planning, and self-regulation. At a basic physiological level, the brain requires adequate oxygenation to sustain mental effort and cognitive control. In individuals with ADHD, research has shown reduced activation in prefrontal regions during tasks requiring sustained attention. HEG neurofeedback supports the brain in increasing and stabilising oxygenation in these areas, thereby improving attentional regulation. Research into HEG neurofeedback has demonstrated meaningful improvements in attention and executive functioning when training is applied in a targeted and structured way. In published studies³, initial blocks of approximately ten HEG sessions focusing specifically on prefrontal oxygenation have been associated with measurable improvements in QEEG patterns and attentional performance. These findings should be understood in context. Research studies typically isolate a single aspect of brain function to minimise intervening variables. HEG research, therefore, examines the effects of training oxygenation in a specific brain region, rather than addressing the full range of attentional and regulatory patterns involved in ADHD. For this reason, HEG neurofeedback is implemented clinically as part of a broader neurofeedback programme rather than as a standalone intervention. Rachel Langford explains how HEG neurofeedback supports focus by training oxygen patterns in the prefrontal cortex. https://youtu.be/HgldDNLJpMk?si=Ki_AHi1X5JpscHMc

Step 1 involves a brain map and analysis using QEEG, an objective tool to evaluate brainwave function scientifically. This identifies specific ADHD-related patterns for personalized training. A QEEG assessment is used to understand how the brain is functioning and regulating across different regions and networks. It provides a detailed map of brain activity patterns related to attention, regulation, connectivity, and stability. A QEEG does not diagnose conditions. Its role is to identify patterns that help guide training in a precise and structured way. The assessment process includes a clinical history, standardised questionnaires, and the QEEG recording itself. This information is then reviewed in a dedicated Results session, which forms an integral part of the assessment. During this session, the clinician explains the brain map, outlines the patterns identified, and describes how these findings relate to the client’s presenting difficulties. This allows the client to understand, in a clear and systematic way, which aspects of brain regulation will be addressed during training and why. https://youtu.be/zpuWHRksCx4?si=T0ZdZyFGFrUFxtKQ

Step 2 consists of 40-50 sessions, each of one hour. Neurofeedback training at the nctNeurofeedback Clinic is an active, clinician-guided process. Sessions are led by a trained practitioner who works continuously with the client’s real-time brain signals, adjusting parameters and targets as the session progresses. During training, sensors read brain activity and provide immediate feedback. This feedback allows the brain to gradually shift toward more stable and efficient patterns of regulation. The process is physiological rather than conscious. Clients are not required to apply strategies or “try” to focus. Instead, the brain learns through repeated exposure to feedback that reflects more regulated states. Training is adjusted throughout the programme. Changes are informed by ongoing observation, session data, and how regulation is showing up in daily life. As the brain becomes more stable, training is refined to support attention, emotional steadiness, and cognitive control in a way that remains appropriate to the individual. Over time, these changes translate into improved consistency of focus, greater emotional regulation, and increased capacity to manage cognitive and everyday demands. The emphasis is not on momentary performance during sessions, but on building regulation that carries into real-world functioning. https://youtu.be/hqSw7LjauBc?si=Q80HyZqySiEvzhZ-

By the end of a full course of therapy, many clients experience meaningful improvements, including: • Improved focus and sustained attention • Greater ability to complete tasks and follow through • Improved emotional regulation and impulse control • Development of a conscious strategy for “how do I make myself concentrate?” Importantly, ADHD is not treated as something to be removed. Many individuals with ADHD are exceptionally creative, intuitive, and perceptive. The purpose of treatment at the nctNeurofeedback Clinic is not to diminish these qualities, but to add regulation and choice.

References

1. Thatcher RW. EEG normative databases and EEG biofeedback. J Neurother. 1998;2(4):8–39. doi:10.1300/J184v02n04_02.
2. Enriquez-Geppert S, Smit D, Pimenta MG, Arns M. Neurofeedback as a treatment intervention in ADHD: current evidence and practice. Curr Psychiatry Rep. 2019;21(6):46. doi:10.1007/s11920-019-1021-4.
3. Carmen JA. Passive infrared hemoencephalography (pIR HEG): four years and 100 migraines. J Neurother. 2004;8(3):23–51. doi:10.1300/J184v08n03_03.
4. Arns M, Heinrich H, Strehl U. Evaluation of neurofeedback in ADHD: the long-term effects and clinical relevance. J Neural Transm (Vienna). 2020;127(8):1163–1181. doi:10.1007/s00702-020-02179-w.
5. Barth B, Strehl U, Fallgatter AJ, Ehlis AC. Near-infrared spectroscopy-based neurofeedback training in adults with attention-deficit/hyperactivity disorder: a randomized controlled trial. Sci Rep. 2021; 11:15103. doi:10.1038/s41598-021-95928-1.
6. Lubar JF. Long-term follow-up of EEG neurofeedback in ADHD. In: Evans JR, Abarbanel A, eds. Introduction to Quantitative EEG and Neurofeedback. Academic Press; 1999.

Neurofeedback for ADHD in London Medication-Free ADHD Treatment for Children and Adults