[Relationships between centers in brain cortex under chronic exposure to occupational hazards].

The authors conclude that breakdown of long-term cerebral adaptation to prolonged occupational hazards manifests itself as various types of disordered relationships between brain hemispheres. Evidence is that value and direction of changes in coherence (interrelationship) of EEG rhythms between symmetrical zones of brain cortex, spatial distribution of these changes, although lacking strict specificity, reflect stress phenomena in higher divisions of CNS and are interesting for solving problems of occupational conditionality of general unfavorable reactions in the system.