[Dynamics of evoked potentials during the course of progressive schizophrenia].

A study of the functional activity of ascending projectional systems in 90 patients with medium progressive(paranoid) schizophrenia demonstrated a correlation between the parameters of evoked potentials and the clinical signs of the disease. During the early paranoidal stage of the pathological process, there was a certain activity of the nonspecific brain areas. As the disease progresses from paranoid states to signs of "secondary"catatonia, there ensues the blockade of the information conduction through nonspecific areas along with a progressive increase in the activity of specific afferent brain projections.