QEEG (Quantitative Electroencephalogram) is the measurement, using digital technology, of electrical patterns at the surface of the scalp which primarily reflect cortical electrical activity or "brainwaves."
A QEEG is recommended for those who want to know precisely how the person's brain functions. By comparing the brain wave information with others in the same normative group, one can discover how a given person's brain waves differ from the normal population.
QEEG measures the different brain waves (delta, theta, alpha and beta) at 19 sites and the relationships of all pairs of sites in three parameters — coherence, phase, and asymmetry.
This assessment is necessary for those who are planning to do neurofeedback. It has direct implications which can be included in the treatment design so that the abnormal brain waves can be corrected.