QUANTITATIVE WAKING-ELECTROENCEPHALOGRAPH Y IN PSYCHIATRY

The present review focuses on quantitative EEG findings in schizophren ia and depression. Methodology and results as described in the literat ure are compared both for conditions at rest and under activation. In schizophrenia approaches dealing with the description of acute states and prediction of therapeutic response offer the most promising result s. The context of changes between delta, alpha and beta have emerged a s the most outstanding finding and there are connections between the l atter and Crow's Type I and II syndromes. With regard to depression al pha- and beta-power findings prevailed. Imbalance of frontal and parie tal laterality were found to be in accordance with depression concepts as known from neuropsychology. Present day pluralism with regard to m ethodology reduces comparability and validability of results. Homogeno us standards must be achieved on an international level in order to in crease the significance of concepts.