[Adaptive dominance and functional asymmetry of brain]

Rapid environmental changes lead to formation of adaptive dominance which makes the body search for biologically appropriate reactions under the new conditions. This changes in fundamental properties of the brain, like memory, emotions, hemispheric functional asymmetry by ensuring optimization of the processing of a drastically increased flow of signals. The order of information processing is determined by its significance for the body. Selection of new and emotiogenic signals first activates by changes in cortical-subcortical relationships, the left hemisphere and the right hemisphere isolate new and emotiogenic information, respectively. Subsequent inversion of hemispheric dominance, i.e. the prevalence of right hemispheric functions provides construction of a new programme of the body's interaction with the altered environment. This may be possible as it is the right hemisphere that predominantly regulates emotional, humoral, and endocrine regulation. At this stage of adaptation, there is an increase in interhemispheric integration which eventually restores the initial interhemispheric relationships. The newly recovered dominance of the left hemisphere ensures not only an effective reproduction of the formed programme, but organizes a leading reflection of reality.