Traditional Neurofeedback is direct training typically provided by health professionals where the brain is observed in action from moment to moment, while “re-training” the brain. LENS Neurofeedback is considered “non-traditional” neurofeedback, also called EEG Biofeedback, because it is based on electrical brain activity, the electroencephalogram, or EEG. LENS Neurofeedback is self-regulation. Self-regulation is a necessary part of optimal brain performance and function, allowing the nervous system to function better.