Effects of ELF Fields on Calcium-Ion Efflux from Brain Tissue in Vitro
- 1 December 1982
- journal article
- research article
- Published by JSTOR in Radiation Research
- Vol. 92 (3) , 510-520
- https://doi.org/10.2307/3575923
Abstract
Carrier waves of 50 and 147 MHz, when sinusoidally amplitude modulated at 16 Hz (ELF), can cause enhanced efflux of radiolabeled Ca ions from chick brain tissue in vitro. This phenomenon occurs only when the samples are exposed to specific intensity ranges of the carrier wave. Unmodulated carrier waves do not affect the ion efflux. Since the ELF signal must be demodulated from the carrier wave to be effective, a study of the efflux enhancement due to the ELF signal alone may lead to an identification of the site of demodulation, as well as provide clues to the underlying mechanism. Sinusoidal fields (16 Hz) in the absence of a carrier wave can alter the efflux rate of Ca ions. The results show a frequency-dependent, field-induced enhancement of Ca ion efflux within the ranges of 5-7.5 V/m and 35-50 V/m (peak-to-peak incident field in air) with no enhancement within the ranges of 1-2, 10-30 and 60-70 V/m.This publication has 1 reference indexed in Scilit:
- Sensitivity of calcium binding in cerebral tissue to weak environmental electric fields oscillating at low frequency.Proceedings of the National Academy of Sciences, 1976