Electroencephalography (EEG) is the measurement of electrical patterns at the surface of the scalp which reflect cortical activity, and are commonly referred to as “brainwaves”.  Quantitative EEG (qEEG) is the analysis of the digitized EEG, and in lay terms this sometimes is also called Brain Mapping. The qEEG compares the brain waves to a normative database, that is, your brain waves are compared to people the same age. The processed EEG is commonly converted into color maps of brain functioning called brain maps.