Effect of broadband pulsed-modulated low intensity electromagnetic field on the activity of conditioned-reflex in rats

Pulse-modulated electromagnetic field (EMF: 3-1 GHz, 25 ms) on cognitive brain functions were tested by shuttle-box active avoidance method. Development of conditioned reflex depending on the number of simultaneously working sources of radiation (6, 8, 17, 20) within a frequency range of 0.475-6.0 GHz was estimated. Transient adverse effect of the electromagnetic field on the development and reinforcement of the conditioned reflex estimated by integral parameters and dynamics of trainability was observed. Broadening a spectral range by adding the emitters led to strengthening the adverse effect.