You are here:
VERY LOW FREQUENCY 16 HZ AMPLITUDE MODULATED ELECTROMAGNETIC RADIATION INCREASES CALCIUM EFFLUX FROM THE FROG HEART
Citation:
Schwartz, J., D. House, AND G. Mealing. VERY LOW FREQUENCY 16 HZ AMPLITUDE MODULATED ELECTROMAGNETIC RADIATION INCREASES CALCIUM EFFLUX FROM THE FROG HEART. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/416 (NTIS PB91171710).
Description:
The effects of continuous and amplitude-modulated radiofrequency electromagnetic waves on calcium efflux from 45Ca preloaded frog hearts were examined. rog hearts, electrically stimulated at their natural beating frequency, were exposed for 30 min to 240 MHz radiowaves in a Crawford irradiation cell. xposures at incident power levels of 0.5, 0.8, 1.0, 1.2, 5.0 and 10.0 Watts (corresponding to calculated specific absorption rates (SAR) of 0.15, 0.24, 0.30, 0.36, 1.50, and 3.00 mW/kg) were tested either in the continuous wavemode or using sinusoidal amplitude modulation at 0.5 Hz, the average beating frequency of the frog hearts, or at 16 Hz. ontinuous and 0.5 Hz amplitude-modulated waves did not affect calcium efflux from the hearts. owever, 16 Hz amplitude-modulated electromagnetic radiation resulted in statistically significant increases in calcium efflux. his effect was most significant at the 1 W incident power level (17.9%, p<0.01) but was also observed at 0.5 W (21.0%, p<0.05). herefore, it appears that frog hearts are affected by electromagnetic radiation at particular power levels and 16Hz modulation frequency, a bioelectromagnetic interaction displaying power and frequency windows comparable to those reported by other investigators in calcium efflux studies on neural tissue.