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Sleep & Circadian Rhythm

INDUCTION OF EXPERIMENTAL SLEEP IN CATS BY THE ACTION OF LOW FREQUENCY MODULATED ELECTROMAGNETIC FIELD

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V. I. Bankov · 1968

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Electromagnetic fields pulsed at brain wave frequencies can artificially induce sleep in mammals, proving EMF directly alters consciousness.

Plain English Summary

Summary written for general audiences

Soviet researchers in 1968 exposed cats to low-frequency electromagnetic fields pulsed at 5-7 cycles per second and found it induced drowsiness and sleep. Brain wave monitoring showed the electromagnetic exposure created physiological changes identical to natural sleep patterns. This early study demonstrated that specific EMF frequencies can directly alter consciousness and brain states in mammals.

Why This Matters

This pioneering 1968 study reveals something remarkable: electromagnetic fields at specific frequencies can literally put animals to sleep. The researchers used 5-7 Hz pulsed fields - frequencies that happen to match the brain's natural theta waves during drowsiness and light sleep. What makes this finding significant is that it demonstrates EMF can directly influence consciousness and brain states, not just cellular processes. The 300 oersted field strength used was quite powerful, far exceeding typical household EMF levels, but the principle remains concerning. Modern wireless devices operate at much higher frequencies, yet they often include low-frequency modulation patterns that could theoretically interact with brain rhythms. While we're not being put to sleep by our phones, this study establishes that EMF can fundamentally alter neurological function. The fact that brain wave patterns, heart rate, and breathing all shifted to match natural sleep suggests these fields can override normal neural control mechanisms.

Original Figures

Diagram extracted from the original research document.

Page 2 - The graph illustrates the effect of modulated EMIP on electrocorticogram (A and B) and PIP (B), showing changes in amplitude over time.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
V. I. Bankov (1968). INDUCTION OF EXPERIMENTAL SLEEP IN CATS BY THE ACTION OF LOW FREQUENCY MODULATED ELECTROMAGNETIC FIELD.
Show BibTeX
@article{induction_of_experimental_sleep_in_cats_by_the_action_of_low_frequency_modulated_g6974,
  author = {V. I. Bankov},
  title = {INDUCTION OF EXPERIMENTAL SLEEP IN CATS BY THE ACTION OF LOW FREQUENCY MODULATED ELECTROMAGNETIC FIELD},
  year = {1968},
  
  
}

Quick Questions About This Study

Yes, Soviet researchers found that cats exposed to electromagnetic fields pulsed at 5-7 cycles per second became drowsy or fell asleep. Brain monitoring confirmed the EMF exposure created physiological changes identical to natural sleep patterns.
The researchers used electromagnetic fields up to 300 oersted in intensity. This is an extremely powerful field strength, thousands of times stronger than typical household electromagnetic field exposures from appliances or wireless devices.
Scientists monitored brain waves (electrocorticography), heart rate, breathing patterns, and brain electrical activity. All measurements showed changes identical to those occurring during natural physiological sleep, confirming the electromagnetic fields genuinely induced sleep states.
These frequencies match the brain's natural theta wave patterns that occur during drowsiness and light sleep stages. The electromagnetic field essentially synchronized with and potentially overrode the cats' normal brain wave rhythms, forcing sleep-like states.
While modern devices operate at much higher frequencies, many include low-frequency modulation patterns. However, the field strengths from phones and WiFi are thousands of times weaker than the 300 oersted used in this cat study.