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Some Studies on the Biological Effects of Magnetic Fields

Review

Henry Aceto Jr., Cornelius A. Tobias, Ira Lee Silver · 1970

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The review speculates that magnetic field phenomena may be associated with physiologic processes and could have deleterious effects on biological systems.

Plain English Summary

Summary written for general audiences

The authors reviewed observed effects of magnetic fields reported by others along with aspects of their own work. Beischer measured cardiophysiology changes in squirrel monkeys exposed to constant magnetic fields up to nearly 10° gauss, finding a pulsating electrical dipole generated by blood movement superimposed on the ECG. Neurophysiologic effects range from neuronal inhibition in cockroaches to increased reaction rates in humans. Amer studied the coupling of magnetic fields with temperature, ionizing radiation, and oxygen tension on Tribolium confusum development, using molting failures and wing abnormalities as indices.

Why This Matters

Gualticrotti found that frog skin depolarizes under a constant magnetic field, with the major effect occurring abruptly at about 6000 Oc and the changes are not reversible but show hysteresis. Barnes demonstrated that constant magnetic fields can increase the rate of simple zero-order ionic chemical reactions limited by ionic diffusion, and that mechanical stirring eliminates this effect. Near the temperature stability limit, a 6000 gauss constant magnetic field protected Tribolium development, allowing normal development at approximately 1°C higher temperature than without the field.

Cite This Study
Henry Aceto Jr., Cornelius A. Tobias, Ira Lee Silver (1970). Some Studies on the Biological Effects of Magnetic Fields.
Show BibTeX
@article{some_studies_on_the_biological_effects_of_magnetic_fields_g5866,
  author = {Henry Aceto Jr. and Cornelius A. Tobias and Ira Lee Silver},
  title = {Some Studies on the Biological Effects of Magnetic Fields},
  year = {1970},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

Beischer subjected squirrel monkeys to constant magnetic fields up to nearly 10° gauss and found a pulsating electrical dipole generated by blood movement superimposed on the ECG. After one day of exposure, heart rate decreased and sinus arrhythmia increased.
At 30°C, magnetic fields up to 10 000 gauss did not appreciably change normal development. Near the temperature stability limit, a 6000 gauss field protected development, allowing normal development at about 1°C higher temperature.
Frog skin depolarizes under a constant magnetic field, with the major effect occurring abruptly at about 6000 Oc. The depolarization is accompanied by a decrease in sodium ion flux inward and the changes are not reversible but show hysteresis.
Barnes demonstrated that constant magnetic fields can increase the rate of simple zero-order ionic chemical reactions limited by ionic diffusion. Mechanical stirring of the reaction vessel eliminates this magnetic field effect.