Super-high Frequency Electric Field and Crustacean Ganglionic Discharges
Itsuo Yamaura, Shiko Chichibui · 1967
High-power 11 GHz microwaves suppressed nerve firing in crustaceans, with stronger radiation causing longer disruption periods.
Plain English Summary
Researchers exposed crayfish and prawn nerve clusters to 11 gigahertz microwave radiation at 300mW/mm² power density. The microwaves suppressed normal nerve firing patterns, with stronger radiation causing longer suppression periods. This 1967 study provided early evidence that microwave radiation can directly disrupt nervous system function in living organisms.
Why This Matters
This pioneering 1967 research demonstrated that microwave radiation can directly interfere with nervous system function at the cellular level. The study used 11 GHz frequency, which falls within the range of modern radar and satellite communications. The power density of 300mW/mm² is extremely high compared to typical consumer exposures, but the linear relationship between radiation intensity and nerve suppression suggests biological effects occur across a spectrum of exposures. What makes this research particularly significant is that it showed both immediate suppression of nerve activity and longer-term subnormal phases, indicating that microwave effects on the nervous system aren't just about heating tissue. The researchers specifically noted both thermal and non-thermal mechanisms at work, a distinction that remains central to EMF health debates today. While we can't directly extrapolate from crustacean nerve responses to human health effects, this study established fundamental principles about how electromagnetic fields interact with nervous tissue that have been confirmed in countless subsequent studies.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{super_high_frequency_electric_field_and_crustacean_ganglionic_discharges_g5667,
author = {Itsuo Yamaura and Shiko Chichibui},
title = {Super-high Frequency Electric Field and Crustacean Ganglionic Discharges},
year = {1967},
}