Browse 8,655 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,753 studies in Brain & Nervous System
William M. Houk, Sol M. Michaelson · 1974
This 1974 study exposed young male rats to 2450 MHz microwave radiation (the same frequency used in microwave ovens) to measure how their bodies regulated temperature and metabolic processes. Researchers used direct measurement techniques to study how microwave exposure affects the brain's hormone control systems and the body's stress responses.
L. V. Polyashchuk · 1973
Soviet researchers in 1973 exposed rabbits to microwaves of varying power levels and durations, finding that the radiation increased permeability of critical biological barriers including the blood-brain barrier. The study examined how microwaves affected different reflexogenic zones and the body's protective barriers that normally prevent harmful substances from reaching sensitive tissues.
J.H. Gold, J.C. Schuder · 1973
This 1973 theoretical study explored how implanted solid-state diodes could convert radiofrequency (RF) electromagnetic fields in tissue into direct current to stimulate nerves. The research examined the engineering principles behind using RF fields to create electrical stimulation in biological tissue through implanted electronic devices.
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.
W. B. STAVINOHA, S. T. WEINTRAUB, A. T. MODAK · 1973
Researchers used 2450 MHz microwave radiation to instantly kill laboratory rats and mice while preserving brain chemistry for analysis. The microwave method preserved nearly twice as much acetylcholine (a critical brain chemical) compared to standard killing methods. This 1973 study demonstrates that microwave radiation can rapidly penetrate the entire brain and alter biological processes within seconds.
Ronald J. Spiegel, William T. Jones · 1973
This 1973 theoretical study explored how microwave radiation might affect nerve cells even when the energy levels are too low to cause heating. Using quantum mechanical modeling, researchers identified a potential mechanism where electromagnetic fields could interact with nerve cell membranes through molecular processes, not just thermal effects.
Gerald Silverberg · 1973
This 1973 research by Silverberg examined whether microwave radiation poses health risks to both mental and physical well-being. The study explored biological effects of electromagnetic radiation, drawing on Soviet research that had identified potential hazards beyond simple heating effects. This work contributed to early understanding of non-thermal microwave impacts on human health.
Bernard SERVANTIE et al. · 1973
French researchers in 1973 studied how prolonged microwave exposure affects laboratory animals, specifically looking for biological effects that weren't caused by heating. They intentionally used weak power levels to identify non-thermal effects and discovered pharmacological changes in the exposed animals.
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.
Kolta P. · 1973
This 1973 study discovered that frog nerve tissue shows unexpectedly strong magnetic properties when exposed to constant inhomogeneous magnetic fields, unlike other body tissues. The researcher found that nerve structures have unique magnetic characteristics that may play a role in how nerve impulses are generated and conducted.
E. Aurell, B. Tengroth · 1973
Researchers studied workers at a factory testing radar and microwave equipment, finding an unusually high rate of eye lens opacities (early cataracts) in younger employees. They also discovered retinal changes resembling scars in many workers exposed to microwave radiation.
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.
FREEMAN W. COPE · 1973
This 1973 theoretical paper proposed that living organisms can detect extremely weak magnetic fields through biological superconducting junctions similar to those found in electronic devices. The author suggested these biological structures could be sensitive enough to detect magnetic fields as weak as 0.00000000001 Gauss, which would explain how animals navigate using Earth's magnetic field.
H. Wachtel, W. Joines, R. Seaman, G. Walker · 1973
Researchers exposed isolated sea slug neurons to low-power microwave radiation at 1.5 and 2.45 GHz (microwave oven frequency) and found dramatic changes in firing patterns. Even though temperatures rose only 1-2°C, the microwaves disrupted normal brain cell rhythms in ways that heat alone could not replicate, suggesting non-thermal biological effects.
D.E. Schmidt, M.J. Schmidt, G.A. Robison · 1973
Researchers exposed rat brains to microwave radiation to instantly stop all brain activity for biochemical analysis. The microwave exposure rapidly inactivated key brain enzymes throughout the entire brain simultaneously. This method preserved brain chemical levels better than traditional sacrifice methods, suggesting microwaves can penetrate and affect brain tissue uniformly.
G. H. Zeman, R. L. Chaput, Z. R. Glaser, L. C. Gershman · 1973
Researchers exposed rats to 2.86 GHz microwave radiation at various power levels to study effects on GABA, a crucial brain neurotransmitter that helps regulate nerve activity. They found no changes in brain GABA levels or the enzyme that produces it, suggesting this specific microwave exposure didn't disrupt this important brain chemical pathway.
Kolesnik, F. A., N. A. Komogortseva · 1973
Soviet researchers studied workers exposed to microwave radiation from SHF generators and found they had significantly reduced sulfhydrile (SH) groups in their blood. These workers also showed various health problems including nervous system dysfunction and cardiovascular issues. The study suggested measuring SH groups could serve as an early warning test for microwave radiation damage.
Eugene M. Taylor et al. · 1973
This 1973 study examined how microwave radiation affects brain activity by measuring changes in the central nervous system's electrical responses. Researchers found that microwaves only produced brain effects through heating, not through any unique electromagnetic mechanism. When they cooled the brain during microwave exposure, the effects were reduced or eliminated entirely.
G. H. Zeman, R. L. Chaput, Z. R. Glaser, L. C. Gershman · 1973
Researchers exposed rats to 2.86 GHz microwave radiation at various power levels to study effects on GABA, a key brain neurotransmitter that helps regulate neural activity. The study found no changes in brain GABA levels or the enzyme that produces it, suggesting this specific frequency didn't disrupt this particular brain chemistry pathway.
小林雅文, 白井孝, 北山善之進, 鶴田真敬, 石塚勇次郎 · 1973
This 1973 Japanese study examined how pentobarbital anesthesia and serotonin affected growth hormone levels in adrenalectomized rats (rats with surgically removed adrenal glands). The research investigated the complex interactions between anesthetic drugs, neurotransmitters, and hormonal regulation in laboratory animals. While not directly an EMF study, this type of research provides important baseline data for understanding how various exposures affect biological systems.
E. D. Finch, B. D. McLees · 1973
This 1973 research examined how radiofrequency radiation affects three important proteins in the body: gamma globulin (part of immune function), acetylcholinesterase (crucial for nerve signaling), and chymotrypsin (involved in digestion). The study represents early scientific investigation into whether RF energy can alter critical biological molecules that keep our bodies functioning properly.
Charlotte Silverman · 1973
This 1973 research by Silverman examined how microwave radiation affects the nervous system and behavior in humans, focusing on occupational exposure settings. The study represents early scientific investigation into neurological and behavioral impacts of microwave exposure in workers. This foundational research helped establish the scientific basis for understanding how microwave radiation might affect brain function and behavior.
Frank A. Brown, Jr., Carol S. Chow · 1973
This 1973 study by Frank Brown examined how organisms respond to extremely weak electromagnetic fields, including Earth's natural fields. The research revealed that organisms not only detect these weak fields but their biological activity changes with natural electromagnetic fluctuations in the atmosphere. Most surprisingly, the study found that some organisms themselves emit electromagnetic fields that can influence the behavior of other nearby organisms.
W. D. Skidmore, S. J. Baum · 1973
This 1973 technical report examined biological effects in rodents exposed to pulsed electromagnetic radiation, marking early research into how pulsed RF fields affect living organisms. The study found measurable biological effects, contributing to the foundational understanding that electromagnetic radiation can produce detectable changes in biological systems. This research represents important early evidence that pulsed EMF exposure creates biological responses in mammals.
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.