INTRODUCTION: EFFECTS OF ELECTROMAGNETIC RADIATION ON THE NERVOUS SYSTEM
W. R. Adey · 1975
Studies reported behavioral effects including shortening of human reaction times, of human circadian rhythms, and of subjective estimates of the passage of time in the monkey, using electric fields at 5-15 Hz with a peak amplitude of 2-10 V/m in air. There was a remarkable tuning curve for different modulation frequencies, with increased calcium efflux from the cortex at modulation frequencies between 9 and 20 Hz, but very little increase outside this frequency band. Pulsed electric stimulation of cat cortex with gradients in the range 20-60 mV/cm increased the efflux of both calcium and GABA.