Browse 8,655 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 287 studies (Rodent Studies) from Glaser RF/Microwave Archive
Kinn JB · 1977
This 1977 study measured how much 2450 MHz microwave radiation (the same frequency used in microwave ovens) was absorbed by rats and mice of different sizes. Researchers found that even animals of similar weight could absorb radiation at vastly different rates - up to seven times more in some cases than others.
Tikhonchuk VS · 1977
This 1977 Soviet research examined how mice recovered from microwave radiation exposure at 2400 MHz, the same frequency used in modern WiFi and microwave ovens. The study focused on biological recovery processes following microwave irradiation. This early research provides historical context for understanding how microwave frequencies affect living organisms.
T. A. Perumal, T. K. Bullard, C. Jayachandran · 1977
Researchers applied electric fields to immobilized rat legs for 6 hours daily over 21 days to test whether electrical stimulation could prevent bone loss from disuse. The study found that electric fields at 100-200 volts effectively reduced bone atrophy that normally occurs when limbs are immobilized, suggesting electrical stimulation may help maintain bone health.
R. H. Lenox, J. L. Meyerhoff, O. P. Gandhi, H. L. Wray · 1977
Researchers tested how microwave radiation affects brain chemistry in rats, specifically measuring cyclic AMP levels in different brain regions. They found that microwave exposure altered brain metabolism at different rates depending on the brain region, with the hypothalamus, cortex, and cerebellum responding differently. The study highlighted technical challenges in controlling microwave exposure parameters for consistent results.
Sol M. Michaelson, Ronnie Guillet, Franklin W. Heggeness · 1977
Researchers exposed pregnant rats to 2450 MHz microwave radiation (the same frequency used in microwave ovens and early WiFi) at power levels of 10-40 mW/cm² during different stages of pregnancy. The study investigated whether this prenatal microwave exposure would affect the functional development of the offspring, though the abstract cuts off before revealing the complete findings.
А. Д. Стржижковский, Г. В. Галактионова · 1976
Soviet researchers in 1976 studied the effects of prolonged magnetic field exposure on rodents, motivated by concerns about astronauts being exposed to magnetic radiation shielding during long space missions. The study examined both constant and alternating magnetic fields at approximately 1000 gauss strength over several days. This early research aimed to establish safety limits for magnetic protection systems in spacecraft.
Г. Д. Антимоний et al. · 1976
Soviet researchers in 1976 studied how extremely low frequency electromagnetic fields affected self-stimulation behavior in rats. This early research examined whether EMF exposure could alter reward-seeking behaviors in laboratory animals. The study contributes to understanding how electromagnetic fields might influence brain function and behavioral responses.
Ernest N. Albert · 1976
This 1976 study examined microscopic tissue changes in the central nervous system of laboratory rodents after exposure to microwave radiation. Researchers used histological analysis to observe structural changes in brain and nervous system tissue following microwave exposure. The research represents early scientific investigation into whether microwave radiation can cause visible damage to nervous system cells and structures.
Roberts Rugh, Henry Ho, Mary McManaway · 1976
This 1976 study exposed mice to microwave radiation at different dose rates and found that slower exposure rates required higher total doses to cause death. The research demonstrated that both the rate of microwave absorption and total dose matter for biological effects, not just the total amount absorbed.
Roberts Rugh · 1976
Researchers exposed 114 male and female mice of different ages to lethal doses of 2450 MHz microwave radiation to determine sensitivity differences. They found that older mice survived longer under constant exposure, but the total energy dose needed to cause death remained similar within each sex. Male mice consistently required higher radiation doses to die compared to females across all age groups.
J. Eugene Robinson, Duncan McCulloch, Edgar A. Edelsack · 1976
Researchers used 2450 MHz microwaves (the same frequency as microwave ovens) to heat tumors in mice, finding that 200 watts was barely enough to warm small tumors. They developed a technique combining warm air with microwaves to achieve therapeutic heating levels more efficiently and uniformly.
Robert H. Lenox et al. · 1976
This 1976 study developed microwave techniques to rapidly shut down brain enzymes in living rodents for research purposes. The researchers found that microwave energy could quickly and evenly inactivate brain enzymes while keeping the brain tissue intact for further study. This was primarily a methodological study to improve laboratory research techniques.
James H. Merritt, Richard H. Hartzell, James W. Frazer · 1976
Researchers exposed rats to 1.6 GHz microwave radiation for 10 minutes, causing a 4°C temperature rise and measuring brain neurotransmitter changes. The radiation decreased key brain chemicals including norepinephrine, serotonin, and dopamine - effects that went beyond simple heating. This suggests microwave radiation can directly alter brain chemistry in ways that temperature alone cannot explain.
S. J. BAUM et al. · 1976
Researchers exposed rodents to intense electromagnetic pulse (EMP) radiation for 94 weeks, delivering 250 million pulses at extremely high field strength (447 kV/m). Despite this massive exposure, scientists found no biological effects on blood chemistry, chromosomes, fertility, or tumor development. This 1976 study suggests rodents can tolerate very high levels of pulsed electromagnetic radiation without measurable harm.
Unknown authors · 1976
Researchers exposed rat brain tissue to 960 MHz microwave radiation at 2 W/kg and found it reduced the binding of key brain chemicals (atropine and acetylcholine) to their receptors. This suggests microwave radiation can interfere with normal brain chemistry at the cellular level.
O. P. Gandhi · 1975
This 1975 study by O.P. Gandhi examined how rats absorb radiofrequency radiation at different frequencies and orientations. The research found that RF absorption peaks dramatically when the animal's body length matches about one-quarter of the radiation's wavelength, creating a resonance effect that increases absorption by 2.5 to 3.5 times normal levels.
William B. Stavinoha et al. · 1975
Researchers exposed 4-day-old mice to high-frequency electromagnetic radiation and tracked their growth for up to 16 weeks. The study found no effects on growth or development in these young mice. This early research from 1975 suggests newborn mice can tolerate certain levels of RF exposure without obvious developmental impacts.
S. J. Baum et al. · 1975
This 1975 study examined biological effects in rodents continuously exposed to pulsed electromagnetic radiation throughout their adult lives. The research represents early efforts to understand long-term EMF exposure impacts using animal models. While specific findings aren't available, this type of lifetime exposure study provides important data for understanding cumulative EMF health effects.
Richard D. Phillips et al. · 1975
Researchers exposed rats to 2,450 MHz microwave radiation (the same frequency as microwave ovens) for 30 minutes at different power levels. Higher exposures caused dangerous heart rhythm problems, body temperature disruption, and metabolic changes that lasted for hours after exposure ended.
G. N. Catravas · 1975
This 1975 technical report describes coating styrofoam rat cages with quinine for microwave research studies. The work focused on developing proper containment methods for laboratory animals during microwave exposure experiments. This represents early efforts to standardize laboratory protocols for studying microwave radiation effects on living organisms.
Gabriel G. Nahas et al. · 1975
Researchers exposed rats to magnetic fields between 200-1200 Gauss for one month and found no toxic effects or tissue damage. The only notable finding was that young rats exposed to magnetic fields gained more weight than unexposed rats. The study concluded these field strengths should be safe for human exposure lasting several hours.
Roberts Rugh, Edward I. Ginns, Henry S. Ho, William M. Leach · 1975
Researchers exposed 1,096 mice to microwave radiation to study how female reproductive cycles and pregnancy affect radiation sensitivity. They found female mice were more vulnerable during estrus (heat) than other cycle phases, and pregnant mice exposed on day 8 of pregnancy developed birth defects including brain malformations at doses as low as 5 calories per gram of body weight. The study revealed complex, non-linear dose-response relationships that make predicting biological effects difficult.
James H. Merritt, James W. Frazer · 1975
Researchers exposed mice to 19 MHz radiofrequency radiation and measured key brain chemicals including serotonin, dopamine, and norepinephrine. The RF exposure did not alter levels of any neurotransmitters tested. Interestingly, the method used to euthanize control animals affected brain chemical measurements more than the radiation itself.
A.S. HYDE, J.J. FRIEDMAN · 1975
This 1975 study exposed mice to 3 cm and 10 cm microwave radiation to examine effects on body weight and blood cell counts. Researchers found measurable biological changes from both acute single exposures and chronic repeated exposures, though the study acknowledges difficulty in precisely measuring how much microwave energy actually penetrated the animals' tissues.
Akihiko Irimajiri, Tetsuya Hanai, Akira Inouye · 1975
Researchers measured the electrical properties of synaptosomes (nerve endings) isolated from rat brain tissue to understand how these cellular structures conduct electricity. They found that the interior of these nerve endings had about 37% of the electrical conductivity of the surrounding fluid, with internal structures like synaptic vesicles occupying roughly half the space.