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Effects of ELF (1-120 Hz) and modulated (50 Hz) RF fields on the efflux of calcium ions from brain tissue in vitro.

Publication ,  Journal Article
Blackman, CF; Benane, SG; House, DE; Joines, WT
Published in: Bioelectromagnetics
1985

We have previously shown that 16-Hz, sinusoidal electromagnetic fields can cause enhanced efflux of calcium ions from chick brain tissue, in vitro, in two intensity regions centered on 6 and 40 Vp-p/m. Alternatively, 1-Hz and 30-Hz fields at 40 Vp-p/m did not cause enhanced efflux. We now demonstrate that although there is no enhanced efflux associated with a 42-Hz field at 30, 40, 50, or 60 Vp-p/m, a 45-Hz field causes enhanced efflux in an intensity range around 40 Vp-p/m that is essentially identical to the response observed for 16-Hz fields. Fields at 50 Hz induce enhanced efflux in a narrower intensity region between 45 and 50 Vp-p/m, while radiofrequency carrier waves, amplitude modulated at 50 Hz, also display enhanced efflux over a narrow power density range. Electromagnetic fields at 60 Hz cause enhanced efflux only at 35 and 40 Vp-p/m, intensities slightly lower than those that are effective at 50 Hz. Finally, exposures over a series of frequencies at 42.5 Vp-p/m reveal two frequency regions that elicit enhanced efflux--one centered on 15 Hz, the other extending from 45 to 105 Hz.

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Published In

Bioelectromagnetics

DOI

ISSN

0197-8462

Publication Date

1985

Volume

6

Issue

1

Start / End Page

1 / 11

Location

United States

Related Subject Headings

  • Radio Waves
  • Ions
  • In Vitro Techniques
  • Electromagnetic Phenomena
  • Electromagnetic Fields
  • Chickens
  • Calcium
  • Brain
  • Biophysics
  • Animals
 

Citation

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Blackman, C. F., Benane, S. G., House, D. E., & Joines, W. T. (1985). Effects of ELF (1-120 Hz) and modulated (50 Hz) RF fields on the efflux of calcium ions from brain tissue in vitro. Bioelectromagnetics, 6(1), 1–11. https://doi.org/10.1002/bem.2250060102
Blackman, C. F., S. G. Benane, D. E. House, and W. T. Joines. “Effects of ELF (1-120 Hz) and modulated (50 Hz) RF fields on the efflux of calcium ions from brain tissue in vitro.Bioelectromagnetics 6, no. 1 (1985): 1–11. https://doi.org/10.1002/bem.2250060102.
Blackman CF, Benane SG, House DE, Joines WT. Effects of ELF (1-120 Hz) and modulated (50 Hz) RF fields on the efflux of calcium ions from brain tissue in vitro. Bioelectromagnetics. 1985;6(1):1–11.
Blackman, C. F., et al. “Effects of ELF (1-120 Hz) and modulated (50 Hz) RF fields on the efflux of calcium ions from brain tissue in vitro.Bioelectromagnetics, vol. 6, no. 1, 1985, pp. 1–11. Pubmed, doi:10.1002/bem.2250060102.
Blackman CF, Benane SG, House DE, Joines WT. Effects of ELF (1-120 Hz) and modulated (50 Hz) RF fields on the efflux of calcium ions from brain tissue in vitro. Bioelectromagnetics. 1985;6(1):1–11.
Journal cover image

Published In

Bioelectromagnetics

DOI

ISSN

0197-8462

Publication Date

1985

Volume

6

Issue

1

Start / End Page

1 / 11

Location

United States

Related Subject Headings

  • Radio Waves
  • Ions
  • In Vitro Techniques
  • Electromagnetic Phenomena
  • Electromagnetic Fields
  • Chickens
  • Calcium
  • Brain
  • Biophysics
  • Animals