Abstract

Effects of continuous wave (CW) microwave exposure (6,5 GHz, 0.1–2 kW/kg, 0.1–20 min) were studied in isolated frog spinal cord preparation. In constant-temperature conditions microwaves didn't influence nerve function, including fiber conduction, mono- and polysynaptic transmission, pre- and postsynaptic inhibition, summation, dorsal root potentials, modifiability, pacemaker activity and spontaneous motoneurone discharges. Microwave heating evoked the same changes as the equivalent conventional heating. Microwave exposure didn't modify the damaging effect of high temperature and hypoxia. The same results were obtained using some other wavelengths and various isolated preparations: snail neurones, earthworm giant axon and newborn rat spinal cord. The conclusion was made that short-term CW microwave exposure had no non-thermal effect on nerve function.

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