In general, neurofeedback is a form of biofeedback that relies on brainwave patterns. It measures the brain wave activity to indicate how a person is functioning. Neurofeedback takes into account cognitive and behavioral aspects of the person in addition to measuring brain activity. Neurofeedback is based on neuroscience, which is the study of the nervous system.
With neurofeedback treatment, a patient can learn to improve and strengthen these patterns in order to produce faster brainwaves that can improve learning, focus, and attentiveness. The training is bi-directional and can increase and decrease different brainwaves at the same time. With Z score training you may be training eight to ten metrics, and with LORETA Z score you may train hundreds of metrics at the same time. You can alter how the brain is resourcing energy to the cortical level, as well as how the different parts of the brain are communicating and the timing of the brain.
A QEEG (or quantitative electroencephalogram) is the first step for all neurofeedback treatment. This involves placing a cap with sensors on the head and recording 20 minutes of data, both with eyes open and eyes closed. The standard procedure is to utilize the International 10 20 System for electrode placement during the QEEG, these areas have been identified as responsible for specific functions of the brain. Once the data has been artifacted and edited it is compared to a normative data base that is both gender and age specific.
This shows us how your brain compares to a person of the same sex and age. It will show if you have too much of a brain wave frequency or not enough (over or under activation).
The field of EEG biofeedback has advanced dramatically in recent years. Also, advances in neuroscience provide a richer understanding of the mechanisms of EEG operant conditioning, allowing for improved treatment across the different types of neurofeedback, especially in Z score training.
These increases in knowledge have allowed for the improvement of neurofeedback treatment, and other advances in the field. There are different types of neurofeedback, surface EEG trains only the amplitude of the waves, while Z score training trains the amplitude (power), the coherence (connectivity) and the phase lag (timing).
The most recent discovery is LORETA, Low Resolution Electromagnetic Tomographic Analysis that was developed by Roberto Pascal Marti, Key Institute, in Zurich. LORETA Z score Neurofeedback was developed at the University of Tennessee and papers have been published on the clinical efficacy. The goal of LORETA is to train the activity inside the brain, not just the surface EEG on the cranium of the brain.
Emotion, memories and behavior depend on the coordinated activities of regions in the brain connected by the limbic system. LORETA Z score training allows us to train the different systems (networks and hubs) in all three dimensions, amplitude, coherence, and timing. LORETA connects the data from your QEEG to the Broadmann areas in the brain that research associates with the symptoms you are experiencing, allowing only the areas that match to be trained. Relying solely on brain maps can be misleading, as the brain develops compensatory systems as a way to work around the problem, resulting in a misrepresentation of what is causing the problems. With the LORETA Z score training you are utilizing over two hundred years of research linking symptoms to the Broadman areas in the brain, with the end result of treating the root cause and not a symptom.
The Brain Performance Center is proud to offer LORETA Z score neurofeedback, being one of approximately 100 clinics in the USA that offer this type of neurofeedback.