QEEG stands for quantitative electroencephalograph. Recorded from 19-channels (see EEG Recording), the resulting EEG data are computer processed to provide a statistical analysis of brain electrical activity. In turn, these data are presented in various visual forms such as "brain maps" and other images which can show the ways in which different areas of the brain are functioning. The use of a normative database allows for a precise determination of whether brain functioning falls within a "normal" pattern for a persons age, sex and handedness, or whether there is some other type of functioning which might need clinical attention. Perhaps, the most important use of the QEEG is to provide a guide for Neurofeedback training which can help to correct abnormal brain functioning. (See Brain Maps)