Analeptic Effect of Microwave Irradiation on Experimental Animals
R. D. McAfee · 1970
Scientists documented behavioral effects from microwave radiation in animals as early as 1970, decades before wireless technology became ubiquitous.
Plain English Summary
This 1970 study examined the 'analeptic effect' of microwave radiation on laboratory animals, investigating how microwave exposure influenced behavioral responses and potentially stimulated or revived certain biological functions. The research explored early connections between microwave radiation and observable changes in animal behavior and physiology.
Why This Matters
This research represents some of the earliest scientific investigation into microwave radiation's biological effects, conducted at a time when microwave technology was just entering widespread use. The term 'analeptic' refers to stimulating or restorative effects, suggesting researchers observed microwave exposure could alter animal behavior or physiological responses in measurable ways. What makes this study particularly significant is its timing - 1970 predates the cellular phone era by decades, yet scientists were already documenting biological responses to microwave frequencies. The reality is that concerns about microwave radiation's effects on living systems aren't new or reactionary - they've been part of scientific discourse for over 50 years. Today's microwave exposures from WiFi, cell phones, and smart devices operate at similar frequencies to those studied in early research like this, making these foundational studies highly relevant to our current EMF environment.
Finding
The analeptic effect may be produced by lower frequencies in the microwave region of the electromagnetic spectrum and has been produced by ourselves at 2450 MHz [7]. The phenomena of the response of the peripheral nerves to the critical temperature of about 45°C is not well known. But it is the neuron and not the terminal end organs of the peripheral nerves that respond to the specific temperature (11).
In their words
“The analeptic effect may be produced by lower frequencies in the microwave region of the electromagnetic spectrum and has been produced by ourselves at 2450 MHz [7]. The phenomena of the response of the peripheral nerves to the critical temperature of about 45°C is not well known. But it is the neuron and not the terminal end organs of the peripheral nerves that respond to the specific temperature (11).”
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
To investigate the analeptic effect of microwave irradiation on experimental animals and determine whether this effect is thermal or nonthermal in nature.
X-band microwave radiation was used for investigation of possible low power density 'nonthermal' eff...
Microwave irradiation aroused sleeping or anesthetized animals from deep anesthesia. The arousal res...
The alleged nonthermal low power density effect was actually a thermal response from stimulation of peripheral nerves. The analeptic effect was not due to direct stimulation of central nervous system structures but rather to thermal stimulation of afferent peripheral nerve branches within the subdermis. The effect occurs at temperatures around 45°C and is a nociceptive response. The study suggests that apparent nonthermal effects in previous research may have been misinterpreted thermal effects. The findings indicate that inadvertent thermal stimulation of peripheral nerves during microwave exposure can produce responses that might be mistaken for special microwave effects.
Show BibTeX
@article{analeptic_effect_of_microwave_irradiation_on_experimental_animals_g3800,
author = {R. D. McAfee},
title = {Analeptic Effect of Microwave Irradiation on Experimental Animals},
year = {1970},
}