Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,764 studies in Brain & Nervous System
Itsuo Yamaura, Shiko Chichibui · 1967
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.
R. A. CHIZHENKOVA · 1967
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.
Arthur S. Wilson, Sanford J. Larson, Anthony Sances, Jr. · 1967
Researchers tested squirrel monkeys' decision-making abilities after electroanesthesia (electrical current used for surgical anesthesia) to measure true recovery time. While monkeys could move almost immediately after the electrical current stopped, their cognitive performance remained impaired for about 30 minutes, revealing that apparent physical recovery doesn't equal complete neurological recovery.
Edward J. Zuperku et al. · 1967
Researchers applied 70 Hz electrical currents to squirrel monkeys' heads and measured how this affected their visual system's electrical responses. They found that these currents disrupted normal brain processing of visual information, with different parts of the visual pathway responding differently to the electrical interference. This demonstrates how external electrical fields can interfere with the brain's normal electrical activity.
Milton M. Zaret · 1967
This 1967 study by Dr. Milton Zaret examined how microwave radiation affects rabbit eyes, specifically investigating lens damage and cataract formation. The research focused on understanding the eye's vulnerability to microwave exposure, which was becoming a growing concern as radar and microwave technologies expanded. This work helped establish early understanding of how electromagnetic radiation can damage delicate eye tissues.
Unknown authors · 1967
This 1967 conference paper examined how diffuse electrical currents affect human physiological mechanisms, specifically investigating applications for electroanesthesia and electrosleep. The research explored using extremely low frequency electrical fields to induce unconsciousness and sleep states in humans. This represents early scientific investigation into how external electrical fields can directly influence brain function and consciousness.
J. A. Tanner, C. Romero-Sierra, S. J. Davie · 1967
This 1967 study examined how microwave radiation affects birds, finding that chickens exposed to 'slightly thermal' microwave fields (20-50 mW/cm²) showed immediate escape and avoidance behaviors within seconds. The research demonstrated that microwave radiation produces both thermal effects (heating) and non-thermal effects (cellular changes) that can trigger rapid behavioral responses in animals.
John M. Davies, David I. Randolph · 1967
This 1967 US Army symposium examined flash blindness, a temporary vision impairment caused by intense light exposure. Researchers studied visual performance recovery in both cats and humans using electroretinography and behavioral testing. The research focused on understanding how bright flashes affect vision and how quickly normal sight returns.
Russell L. Carpenter, Clair A. Van Ummersen · 1967
This 1967 study exposed rabbit eyes to microwave radiation at frequencies from 2.45 to 10 GHz and found it caused cataracts in the lens. The researchers discovered that the location and type of cataract depended on how the eye was exposed, and that repeated shorter exposures could accumulate to cause damage. Importantly, the evidence suggested these cataracts weren't simply caused by heating effects.
P. C. Constant, Jr. · 1967
This 1967 conference paper by PC Constant Jr. explored the phenomenon of electromagnetic wave hearing, focusing on how humans can perceive microwave radiation as auditory sensations. The research examined factors like pulse width and frequency in microwave-induced hearing effects. This early work helped establish the scientific foundation for understanding how electromagnetic fields can directly stimulate the auditory system.
Russell L. Carpenter, Clair A. Van Ummersen · 1967
This 1967 study exposed rabbit eyes to microwave radiation at frequencies from 2.45 GHz to 10 GHz and found it caused cataracts in the lens. The location of the cataracts depended on how the radiation was delivered, and researchers noted the damage wasn't simply from heating but from some other property of the microwaves.
Ivanov-Muromskiy, K. A., Likhachev, A. I. · 1967
Soviet researchers in 1967 exposed human and rabbit heads to powerful 7000 gauss magnetic fields to study nervous system effects. They found the magnetic field decreased red blood cell sedimentation rates and hemoglobin while increasing white blood cell counts. In humans, brain exposure raised pain tolerance and reduced sensitivity to electrical stimulation.
D. P. Photiades, S. C. Ayivorh · 1967
Researchers in 1967 tested whether electrostatic fields could help monkeys relax before electroanesthesia procedures. They found that 750 volt per centimeter electrostatic fields produced relaxing and mild sleep-inducing effects in monkeys. This suggested a way to reduce the dangerous side effects of electrical anesthesia by using less current.
I. A. Kolomoitseva, G. D. Kusnetsova, M. S. Myslobodsky · 1967
Soviet researchers in 1967 studied how rabbit brain cortex responded to electromagnetic fields and light stimulation, finding that rhythmic electromagnetic exposure affected brain wave patterns and neuron activity. The study revealed that most visual cortex neurons were inhibited during rhythmic stimulation, while a smaller portion became activated. This early research demonstrated that electromagnetic fields can directly influence brain electrical activity in living animals.
Ban K · 1967
Japanese researchers exposed 50 mice to microwave radiation at various power densities (6.8 to 43.4 mW/cm²) for 5 minutes daily over 7 weeks. Despite observing behavioral changes like face washing and avoidance behaviors at higher power levels, microscopic examination of organs showed no tissue damage. Only one mouse died during the study period.
S. F. Cleary, B. S. Pasternack · 1966
This 1966 study by Cleary examined eye lens changes in workers exposed to microwave radiation. The research found evidence of lenticular (lens) alterations in people working with high-powered radar and microwave equipment. This was among the first studies to document potential eye damage from occupational microwave exposure.
Susan Korbel · 1966
This 1966 technical report examined how ultra high frequency radio waves affected rat behavior, representing early research into microwave radiation's biological effects. The study investigated behavioral changes in laboratory rats exposed to UHF radiation. This research contributed to the foundational understanding of how radio frequency energy might influence living organisms beyond just heating effects.
Bryan, Robert N. · 1966
Researchers in 1966 exposed rats to microwave radiation immediately after training them in a shock-avoidance task. Rats that received microwave exposure retained their learned response 24 hours later, but rats that were handled before the experiment lost this memory despite being capable of learning. This suggests microwave radiation may interfere with normal memory consolidation processes.
A. S. PETROV · 1966
This 1966 Soviet review examined how superhigh frequency (SHF) electromagnetic radiation affects the human body. The research found that microwave frequencies above 3000 MHz penetrate only about 1 cm into skin, while lower frequencies (1000-3000 MHz) can reach several centimeters deep, potentially affecting vital organs like the heart and brain.
Cleary SF, Pasternack BS · 1966
This 1966 study by Dr. S.F. Cleary examined biological effects of microwave radiation on humans, marking an early recognition that non-ionizing EMF could produce detectable biological changes. The research emerged as high-powered radar technology made it possible to generate microwave fields intense enough to study biological impacts. This was groundbreaking work establishing that lower-energy radiation like microwaves could affect living systems.
J. Richard Toleikis et al. · 1966
This 1966 study developed techniques to record individual brain cell activity in squirrel monkeys during electroanesthesia using 70 Hz electrical pulses. Researchers found they could measure how electrical current dramatically changed the firing patterns of single neurons in the brain's sensory-motor cortex. The work established methods for studying how electrical fields affect brain cell function at the most fundamental level.
J. A. Tanner · 1966
This 1966 study by J.A. Tanner examined how microwave radiation affects birds, investigating both thermal (heating) effects and behavioral changes. The research focused on understanding how electromagnetic fields from microwave frequencies impact avian biology and behavior patterns. This early work helped establish foundational knowledge about microwave radiation effects on living organisms.
Yu. A. Trifonov, I. A. Utina · 1966
This 1966 study examined L-type retinal cells in tortoises, finding that these cells produce electrical responses without changing their membrane resistance. Unlike typical nerve cells, these horizontal retinal cells showed electrical activity that didn't correlate with membrane potential changes, suggesting a unique mechanism of cellular response.
L. N. TUMARKINA, N. A. DUBROVSKII · 1966
This 1966 Soviet study examined how humans perceive amplitude-modulated signals (sounds that vary in loudness over time) using white noise and pure tones. Researchers investigated what auditory cues people use to detect these modulated signals and how training improves perception. The study explored fundamental mechanisms of how our hearing system processes information-carrying sounds.
Hornowski J, Marks E, Chmurko E, Panneri L, Wojskow · 1966
This 1966 research by Hornowski examined the harmful effects of microwave radiation on human health, focusing on occupational exposure scenarios. The study represents early recognition that microwave technology could pose pathogenic (disease-causing) risks to people exposed in workplace settings. This pioneering work helped establish the foundation for understanding microwave health effects decades before cell phones became widespread.