Estimation of emotional processes in regulation of the structural afferentation of varying contrast by means of visual evoked potentials

Abstract

We studied central mechanisms for regulation of incoming structural afferentation of varying contrast of mentally diseased by means of multichannel registration of visual evoked potentials (VEPs) and brain topographic mapping with subsequent correlation with behavioral data. The first type of VEPs responses by direct relationship between contrast and VEPs amplitude was characterized. In second case, initially there was VEPs amplitude increase, but later on the relationship became the reverse one, manifested by marked decrease of the amplitude. Comparison of behavioral investigation results with electrophysiological data enabled to find that the first variant of reaction was characterized by lower degree of visual images identification, under condition hampering their identification, irrespective of test objects modality.