[Clinico-physiologic analysis of psychogenic tics in children].

The results obtained in a study of 100 patients formed the basis for major differential diagnostic criteria of psychogenic tics in children. Polygraphic examination of the sleep-wakefulness cycle revealed dysfunctions in the nonspecific cerebral systems in the form of hyperfunction of the activating and insufficiency of the inhibitory apparatuses which were expressed in all functional states in the EEG, motor and vegetative spheres. These changes are considered to be pathogenetically important in view of their connection with the most significant clinical characteristics of the disease. On the basis of electrophysiological indicators, the data were obtained which substantiate therapeutic efficacy of psychostimulators in patients with the syndrome of motor hyperactivity.