Incidence of low-level microwave irradiation on intestinal myoelectrical activity in the rat.
We studied the effect of low-level microwave irradiation (5 and 7.5 mW/cm2 at 2.45 GHz) on intestinal myoelectrical activity on seven unanesthetized rats by way of chronically implanted electrodes. Exposure to microwaves occurred for 1-4 hr in a cavity. The specific absorption rates (SAR) measured were respectively: 5.35, 6.05 and 7.04 mW/g under 5, 7.5 and 10 mW/cm2 of incident radiation. The results obtained showed there is no noticeable electromagnetic interference between microwave and metallic-insulated implanted electrodes. Microwaves produce an accelerating effect on slow waves and a specific inhibitory effect on action potentials, which appears to be directly dependent on the measured SAR values.
D000818:Animals; D004307:Dose-Response Relationship, Radiation; D004386:Duodenum / Q000502:physiology / Q000528:radiation effects; D004576:Electromyography; D008297:Male; D008872:Microwaves / Q000009:adverse effects*; D009130:Muscle, Smooth / Q000502:physiology / Q000528:radiation effects*; D051381:Rats; D011919:Rats, Inbred Strains