[Electrophysiological aspects of the indicators of hemispheric asymmetry during reparative processes in the brain after unilateral lesions].

The gears of the conjugate activity of hemispheres in the presence of damage in one were studied before and after removal of a tumor by using an interhemispheric asymmetry index. On left hemispheric exposure, the index decreased in the anterior brain regions having mainly morphofunctional connections with the activating structures of the stem. The posterior cortical regions changed the index on exposures of the right hemisphere or synchronizing stem structures.

[Interhemispheric asymmetry in the anterior and posterior sections of in the normal human brain and in unilateral cortical damage].

The study of interhemispheric bioelectrical asymmetry (IBA) of the brain as a result of pair activity of the hemispheres has shown that in normal subjects IBA was greater in the frontal lobes than in the occipital ones. In patients with injured right hemisphere the asymmetry increased in the occipital lobes. In patients with injured left hemisphere the asymmetry diminished in the frontal lobes.

[Interhemispheric asymmetry in unilateral brain damage].

Hemispheric functional changes and interhemispheric interactions were studied by the bioelectrical parameters of asymmetry in the unilateral brain damage. The magnitude of interhemispheric asymmetry was found to depend upon the site of injury, achieving its maximum at the right-sided localization of a pathological process and slightly changing at the left hemispheric tumor site. The application of functional tests was accompanied by profound increases in asymmetry as compared with the baseline.

[Interhemispheric asymmetry in patients in the rehabilitation period after unilateral damage to the cerebral cortex].

The studies revealed that the level of interhemispheric bioelectric asymmetry, which reflects the functional relations between the hemispheres, is one of the major indices of the functional interaction of the two hemispheres. There were changes in interhemispheric asymmetry in relation to the tumor damage to the right or left hemisphere. The structural lesion of the left hemisphere did not appear to affect interhemispheric asymmetry, whereas right hemispheric dysfunction led to its significantly marked asymmetry, i.