[Sequence of pathomorphological reactions to the action of alternating magnetic fields].

The state of the parietal cortex neural elements in the white rat brains exposed to a total 5-fold effect lasting for 6.5 hours and to a single continuous 24-hour's effect of the magnetic field (strength 20, 40, 70 mT, frequency 50 Hz) have been studied light optically and electron microscopically. The most manifested pathomorphological changes are observed after the 5-fold effect lasting for 6.5 hours. The cortical vessel walls, filamentous astrocytes connected with them, as well as dendrites and spiculae are evidently the most injured formations and perhaps are the first to participate in the response reaction mechanism to the effect of the magnetic field. Hydropic changes appearing everywhere speak in favour of the water-electrolytic balance disturbance, evidently this phenomenon is specific for the magnetic field effects.