Neurofeedback Infra Low Frequency (ILF)

Sets a standard of excellence for neurofeedback clinicians

Neurofeedback therapy has been continuously improved and research is being done to find the most effective methods for each brain and nervous system to get the most out of this technology.

Clinicians have found solutions to identify the optimal brain training strategy for each individual. There are certain adaptations of the brain to the feedback received, and after repeated response tests during the session, the brain finds the best solution.

The brain's strategy will be continuously improved and refined exactly based on the response to training, so the more it works, the more effective it becomes.

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The brain's strategy will be continuously improved and refined exactly. Specialists have analyzed this ability of the brain to look for the optimal level of functioning through neurofeedback, gathering detailed information over the years. The indicators and parameters that influence the success of the therapy were analyzed (for example: regulation of the feedback frequency or positioning of the electrodes). Thus, they introduced in practice those measures that increase the effectiveness of neurofeedback therapy.

Othmer Method was developed by Sue and Siegfried Othmer, who have over 25 years of clinical and scientific experience in neurofeedback. It is a client-based method that uses individualized protocols to achieve the best possible results in reducing a variety of clinical symptoms.


Biofeedback in the EEG alpha rhythm area has been discovered since the 1960s and has since attracted professional interest in the field of human health.

Since the mid-1980s, Siegfried and Sue Othmer, physicists with experience in neurobiology, have been working on the development of an ultra-performing method of neurofeedback, known globally today as the Othmer Method. Sue Othmer has developed well-known bipolar training protocols for their effectiveness. Siegfried Othmer models of the overall effectiveness of neurofeedback with Sue's structured and well-documented approach has greatly contributed to the development of neurofeedback as a technology and therapy.

In the 1980s, Siegfried and Sue Othmer founded EEG Spectrum, and in 2002, Kurt Othmer founded EEG Info in the United States. Since 2012, the German company Bee Medic has been developing neurofeedback systems based on the Othmer method in close collaboration with Siegfried and Sue, exclusively for EEG Info.

At the moment…

For the past 25 years, the Othmer method has proven its effectiveness.

The development of this method was similar to the development of pharmaceuticals: based on proven neurofeedback protocols, such as classical beta-SMR (sensorimotor rhythm) training, feedback parameters were optimized and further developed based on the effect on the client, accompanied by improvements in neurofeedback hardware and software. This has led to the fact that the neural signals that until now were filtered as noise ("Baseline Wander"), more precisely the very low frequencies (ILF = Infra Low Frequeny) are now included in the neurofeedback training. Only the SCP (Slow Cortical Potentials) training method still works with this frequency level.

The Othmer method is based on a combination of three components

1. Classic frequency band training

Classical band training is an integral part of the Othmer method. Even if you work at very low frequencies, the dynamics of feedback methods are used. In addition, there are many individual inhibitors in action, even up to 40Hz.

3. Bipolar training

Empirical studies have clearly shown that feedback to the brain on how the two cerebral hemispheres work in relation to each other is much more effective than displaying only the activity of one of them. Most protocols of the Othmer method are based on bipolar electrode positioning. However, usually an EEG channel is sufficient, which greatly simplifies the practice.

2. Training at very low frequencies - ILF = Infra Low Frequency

After analyzing a large number of cases, it became obvious that there is a faster and better reaction when feedback is provided at a lower EEG frequency. As they sought to reach even lower frequencies with clients, they responded faster, more specifically, with a greater utility of therapy. Thus, the use of very low frequencies (ILF = Infra Low Frequency) was used in feeedback. The effectiveness of training at the level of SCP (Slow Cortical Potentials) is now proven by numerous studies conducted in Germany in recent years.

Neurofeedback is useful for any brain

Neurofeedback therapy is performed in individual sessions