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THE ROLE OF DIFFERENT BRAIN FORMATIONS IN EEG REACTIONS OF RABBITS TO A CONSTANT MAGNETIC FIELD AND ELECTROMAGNETIC FIELDS OF ULTRA HIGH AND SUPERHIGH FREQUENCIES

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R. A. CHIZHENKOVA · 1967

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1967 rabbit study showed electromagnetic fields directly alter brain waves, suggesting EMF bypasses normal neural pathways.

Plain English Summary

Summary written for general audiences

Soviet researchers exposed rabbits to magnetic fields and microwave radiation, then measured brain wave changes using EEG technology. They found that both constant magnetic fields (460 oersteds) and microwave frequencies caused distinct brain wave alterations, including increased 'spindles' and slow, high-amplitude waves. Even after surgically removing key brain structures, the electromagnetic effects persisted, suggesting direct brain stimulation rather than reflex responses.

Why This Matters

This 1967 study provides early evidence that electromagnetic fields directly stimulate brain tissue, bypassing normal neural pathways. The researchers demonstrated that both magnetic fields and microwave radiation at 10 mW/cm² power density trigger measurable brain wave changes in living animals. What makes this particularly relevant today is the power density used - 10 mW/cm² is within range of what you might encounter near WiFi routers or cell towers, though typically much higher than phone emissions at your head.

The finding that brain responses persisted even after removing critical neural structures suggests electromagnetic fields don't just trigger normal sensory pathways - they appear to directly influence brain electrical activity. This challenges the telecommunications industry's long-standing position that non-thermal EMF exposures are biologically inert. While this animal research from the Soviet era predates modern safety standards, it demonstrates that electromagnetic fields can measurably alter brain function at exposure levels we encounter in daily life.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
R. A. CHIZHENKOVA (1967). THE ROLE OF DIFFERENT BRAIN FORMATIONS IN EEG REACTIONS OF RABBITS TO A CONSTANT MAGNETIC FIELD AND ELECTROMAGNETIC FIELDS OF ULTRA HIGH AND SUPERHIGH FREQUENCIES.
Show BibTeX
@article{the_role_of_different_brain_formations_in_eeg_reactions_of_rabbits_to_a_constant_g5636,
  author = {R. A. CHIZHENKOVA},
  title = {THE ROLE OF DIFFERENT BRAIN FORMATIONS IN EEG REACTIONS OF RABBITS TO A CONSTANT MAGNETIC FIELD AND ELECTROMAGNETIC FIELDS OF ULTRA HIGH AND SUPERHIGH FREQUENCIES},
  year = {1967},
  
  
}

Quick Questions About This Study

The constant magnetic field primarily increased the number of 'spindles' in rabbit brain waves during one-minute exposures. These spindle waves are characteristic patterns in EEG recordings that indicate specific brain electrical activity changes.
UHF radiation at 7.5 meter wavelength caused slow, high-amplitude brain waves to appear in rabbit EEGs. These changes were sometimes accompanied by increased spindle activity, showing distinct electromagnetic effects on brain electrical patterns.
Even after surgically removing the midbrain reticular formation, thalamic nucleus, or anterior hypothalamus, rabbits still showed electromagnetic field responses. This suggested the effects were direct brain stimulation, not normal reflex pathways.
The microwave radiation at 12.5 cm wavelength had a power density of approximately 10 mW/cm². This is within the range of exposures you might encounter near WiFi equipment or cell towers today.
The researchers concluded electromagnetic fields caused direct brain stimulation rather than reflex responses. Since brain wave changes persisted even after removing key neural structures, the effects appeared to bypass normal sensory pathways.