[The effect of the brain stem structures on the shaping of the functional state of the human cerebral hemispheres (data from complex clinico-electroencephalographic and neuropsychological research)].

To study the influence of the brainstem on formation of the functional state of the left and right brain hemispheres clinical electrophysiological examination of 13 patients with focal brainstem lesions (neurinoma of the auditory nerve) was carried out before and after surgery. The result were compared with neuropsychological data. Definite correlation was revealed between the changes in coherent structure of EEG and neuropsychological estimation of the functional state of brain areas. The brainstem was shown to be more intimately functionally connected with the left hemisphere than with the right one. The regional specificity within the left hemisphere was determined by the form of cerebral decompensation.