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BEHAVIORAL EFFECTS OF STIMULATION BY UHF RADIO FIELDS

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Susan Korbel Eakin, William D. Thompson · 1965

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47 days of UHF exposure made rats more emotional and slowed neurological recovery, suggesting non-thermal brain effects.

Plain English Summary

Summary written for general audiences

Researchers exposed 20 male rats to UHF radio waves (300-920 MHz) for 47 consecutive days and tracked behavioral changes. The radiated rats initially became more active but then grew less active over time, showed increased emotional responses, and took longer to recover from induced seizures. The study suggests these behavioral effects may be non-thermal and related to changes in the nervous system.

Why This Matters

This 1965 study represents some of the earliest research documenting behavioral changes from radiofrequency exposure, predating widespread concern about wireless technology by decades. The finding that rats showed increased emotionality and slower neurological recovery after UHF exposure is particularly significant because it suggests the nervous system responds to RF fields in ways that go beyond simple heating effects. The frequency range tested (300-920 MHz) overlaps with many modern wireless technologies, including cell phones and WiFi. What makes this research compelling is that the effects developed gradually over weeks of exposure, mirroring how we use wireless devices today. The researchers' conclusion that effects may be 'non-thermal and related to neurophysiological substrates' challenges the industry position that only heating effects from RF radiation matter for human health.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Susan Korbel Eakin, William D. Thompson (1965). BEHAVIORAL EFFECTS OF STIMULATION BY UHF RADIO FIELDS.
Show BibTeX
@article{behavioral_effects_of_stimulation_by_uhf_radio_fields_g3904,
  author = {Susan Korbel Eakin and William D. Thompson},
  title = {BEHAVIORAL EFFECTS OF STIMULATION BY UHF RADIO FIELDS},
  year = {1965},
  
  
}

Quick Questions About This Study

Yes, rats exposed to UHF radio waves for 47 consecutive days showed significant behavioral changes including increased emotional responses, altered activity levels over time, and slower recovery from electroshock-induced seizures compared to unexposed control rats.
Researchers used UHF radio frequencies ranging from 300 MHz to 920 MHz. This frequency range overlaps with many modern wireless technologies including cell phones, WiFi, and other consumer devices we use daily.
Initially, rats exposed to UHF radiation became more active than unexposed rats. However, as the 47-day exposure period continued, the radiated rats gradually became less active than the control group, showing the effects changed over time.
Rats exposed to UHF radiation showed a gradual increase in the time needed to recover from electroshock-induced convulsions. This suggests the radiation may have affected neurological function and the brain's ability to return to normal after stress.
The researchers concluded the behavioral effects were likely non-thermal and related to changes in neurophysiological processes. This means the effects weren't simply due to tissue heating but involved more complex interactions with the nervous system.