Brain mapping or quantitative EEG. QEEG or quantitative EEG is a mathematical and statistical analysis of the brain’s electrical activity. Carefully edited EEG data (cleared of interferences, so-called artifacts) are processed using special EEG databases. This allows us to compare the functioning of the brain of the individual with people of a similar age, without disease or pathology. In this way we identify those areas of the brain in which there are irregularities in terms of the number and types of electrical activity, consistency (in principle connections between locations) and phase (information speed between locations). Brain mapping usually reveals patterns of deviations or irregularities in the frequency of brain waves that are characteristic of certain disorders. Problems with communication between locations in the brain can be a key issue in disability, epilepsy and learning disabilities. Medication usually does not change these basic problems, so that the patient may have relapses or experience chronic symptoms. Maps of the brain can help determine the type of disorder where the problem is in the brain and how to treat it. The brain map is very helpful in planning neurotherapy (eg neurofeedback, eeg biofeedback, tdsc).