Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 446 studies in Symptoms & Sensitivity
Galanin, N.F., et al · 1973
This 1973 study investigated work conditions for radar operators and examined fatigue effects from occupational radar exposure. The research focused on both general fatigue and eye fatigue experienced by workers operating radar equipment, along with potential preventive measures to protect operator health.
M. L. Singewald et al. · 1973
Johns Hopkins researchers followed 11 high-voltage electrical linemen for nine years, conducting regular physical and psychological exams to assess health effects from working in 60 Hz electric fields. The study found no adverse health effects from occupational exposure to power line frequencies, confirming their earlier 1966 findings.
Otto H. Schmitt, Robert D. Tucker · 1973
Researchers tested whether 50 people could consciously or subconsciously detect 60 Hz magnetic fields at household appliance strength (few gauss). Initially some subjects showed remarkable detection abilities, but when acoustic noise and other environmental cues were eliminated, virtually no one could reliably sense the magnetic fields.
Frey AH, Messenger R · 1973
This 1973 study found that humans can perceive "sounds" like buzzes and hisses when exposed to pulsed microwave radiation, even though no actual sound waves are present. The perception depended on peak power rather than average power, and both humans and cats experienced this phenomenon during radar field tests.
Appleton, B. · 1973
This 1973 government report documented clinical surveys examining eye effects from microwave exposure in workers and other exposed populations. The research represents early systematic efforts to identify ocular health impacts from occupational microwave radiation exposure. This work helped establish the foundation for understanding how microwave frequencies can affect vision and eye health.
Richard Felger, Mary Beck Moser · 1973
This 1973 study by Frey examined how humans perceive 'sounds' when exposed to pulsed ultrahigh-frequency electromagnetic energy. Researchers found that people's perception of these phantom sounds depended primarily on peak power levels, with pulse width as a secondary factor, while average power had no significant effect.
George F. D'Cunha et al. · 1973
A patient with a Medtronic 5842 pacemaker experienced repeated fainting episodes caused by radio frequency interference from a nearby television transmitter. The interference disrupted the pacemaker's normal function, but switching to a titanium-shielded model solved the problem.
Brodkin RH, Bleiberg J · 1973
This 1973 medical report documented two cases where people developed fingernail deformities after suspected microwave exposure. The doctors observed abnormal nail growth patterns that they attributed to microwave radiation damage. This early case study highlighted the need for physicians to consider microwave exposure when diagnosing unexplained nail problems.
Richard Felger, Mary Beck Moser · 1973
This 1973 study by Dr. Allan Frey demonstrated that humans can perceive pulsed microwave radiation as sound, even without using their ears. The research found that peak power levels and pulse characteristics determined what people heard, while average power had no effect. This discovery revealed a direct biological interaction between electromagnetic fields and the human nervous system.
Budd Appleton · 1973
This 1973 government report documented clinical surveys examining microwave radiation's effects on human eyes. The research investigated eye-related health problems in people exposed to microwave radiation, likely including military personnel and industrial workers. This early study helped establish the foundation for understanding microwave radiation's impact on one of our most sensitive organs.
George F. D'Cunha et al. · 1973
A patient with a Medtronic 5842 pacemaker experienced repeated fainting episodes (syncope) caused by radio frequency interference from a nearby television transmitter. The RF signals disrupted the pacemaker's normal function, but switching to a titanium-shielded Medtronic 5942 model solved the problem.
Dr Albert Krueger · 1973
Dr. Albert Krueger's 1973 research examined how air ion concentrations affect human health and comfort. The study found that ion-depleted indoor air may cause anxiety, discomfort, reduced efficiency, and increased respiratory infection risk. Positive ion excess was linked to the ill effects of notorious winds like the Sharav and Föhn.
Tadeusz E. Wroblewski et al. · 1973
Researchers studied hospital patients who worked with microwave radiation and found that 14% developed duodenal ulcers, compared to normal population rates. The workers were exposed to microwave radiation levels of 10-100 mW/cm² through their jobs. The authors concluded that prolonged workplace microwave exposure may contribute to developing stomach ulcers.
T. Daryl Hawkins et al. · 1973
This 1973 Walter Reed Army study exposed rats to 3000 MHz microwave radiation to test both lethal effects and behavioral changes. Researchers found that lower power densities required more total energy to kill rats than higher power densities, and discovered substantial frequency-dependent effects on rat behavior that could apply to other species including humans.
Richard Felger, Mary Beck Moser · 1973
This 1973 study by Frey demonstrated that humans can actually "hear" pulsed microwave radiation without any sound waves reaching their ears. Researchers found that people perceived these phantom sounds based on the peak power of the electromagnetic pulses, not the average power level. The pitch and tone quality of these perceived sounds changed depending on how the microwaves were modulated.
D'cunha GF et al. · 1973
Researchers documented a patient whose Medtronic 5842 pacemaker malfunctioned near a television transmitter, causing repeated fainting episodes due to radio frequency interference. The problem was resolved by switching to a titanium-shielded pacemaker model that blocked the electromagnetic interference.
John de Lorge · 1973
Researchers exposed two rhesus monkeys to extremely low frequency (ELF) magnetic and electric fields at 45 Hz and 10 Hz to test behavioral effects. The study found no significant changes in reaction time, operant responding, or cognitive tasks. Even minor effects observed at 10 Hz were not clinically meaningful and couldn't be replicated.
Nicholas Wade · 1972
This 1972 article examined allegations that the Soviet Union used microwave devices to influence American chess champion Bobby Fischer during his historic world championship match against Boris Spassky. The investigation explored whether microwave radiation could cause 'asthentic syndrome' (fatigue and concentration problems) to disrupt Fischer's performance.
Merckel C · 1972
This 1972 analysis examined microwave radiation hazards from radar and early commercial applications, finding proven lethal effects in animals and cataract formation in humans. The study warned about increasing exposure risks from microwave ovens and interference with medical devices like pacemakers.
Michaelson SM · 1972
This 1972 study examined how humans perceive microwave radiation through skin sensations, finding that people can feel warmth from microwave exposure at specific power levels. Researchers determined that thermal sensation thresholds were 21 mW/cm² for 10 GHz and 58.6 mW/cm² for 3 GHz when exposing a 40 cm² area of facial skin. The findings suggest that our ability to feel microwave-induced heat could serve as a natural warning system against potentially harmful exposure levels.
Frey A, Messenger R, Erchert E · 1972
Researchers in 1972 successfully demonstrated that radiofrequency (RF) energy can create the perception of sound directly in the human head without using the ears. They built a portable device to demonstrate this 'RF sound phenomenon' and explored whether it could generate speech, finding that traditional speech synthesis methods didn't work for this direct neural stimulation.
Sol M. Michaelson · 1972
This 1972 study examined how humans perceive microwave radiation through skin sensation, finding that people can feel warmth within 1 second when exposed to microwaves at specific power levels. Researchers determined that a 40 cm² area of facial skin could detect thermal sensation at 21 mW/cm² for 10,000 MHz microwaves and 58.6 mW/cm² for 3,000 MHz microwaves. The study established that our skin's ability to sense heat serves as a natural warning system for microwave exposure.
Lawrence T. Odland · 1972
This 1972 Air Force medical report documented early observations of microwave hazards to military personnel, representing some of the first systematic attempts to study radio-frequency health effects in occupational settings. The study acknowledged that most pre-1945 research was inadequate, marking a shift toward more rigorous investigation of EMF biological effects as military radar and communication systems expanded rapidly.
Nicholas Wade · 1972
This 1972 study examined allegations that low-intensity microwave radiation was used to induce 'asthenic syndrome' (fatigue, weakness, and cognitive impairment) during the famous Fischer-Spassky chess championship. The research investigated whether microwave exposure could deliberately cause neurological symptoms as suggested in the Cold War-era chess match controversy.
S.Baranski, P.Czerski · 1972
This 1972 Polish study by Baranski examined the health effects of occupational microwave exposure on workers professionally exposed to microwave radiation. The research represents early systematic health surveillance of microwave-exposed personnel, contributing to our understanding of potential health risks from workplace microwave exposure.