Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,764 studies in Brain & Nervous System
King, Justesen, Clarke · 1971
Researchers trained rats to detect microwave radiation using behavioral conditioning techniques. The rats could reliably sense 12.25-centimeter microwaves at power levels as low as 0.5 milliwatts per gram. This demonstrates that mammals can physically detect microwave energy at relatively low exposure levels.
Tyagin, N. V. (Nikolay Vasil'yevich) · 1971
This 1971 Soviet study examined workers exposed to Super High Frequency (SHF) microwave radiation and documented three distinct patterns of health effects: nervous system dysfunction, cardiovascular problems, and brain center disruption. The research identified that prolonged occupational exposure could cause irreversible health damage in some cases, though protective measures could prevent most harmful exposures.
Alan R. Shapiro, Richard F. Lutomirski, Harold T. Yura · 1971
Researchers in 1971 developed a mathematical model to calculate how microwave radiation penetrates and heats different layers of the human head, including skull, brain tissue, and other structures. They found that simple flat-surface models drastically underestimate radiation absorption, showing the head's spherical shape concentrates microwave energy in ways that create dangerous hot spots inside the brain.
Neidlinger RW · 1971
This 1971 medical review examined the established link between microwave radiation exposure and cataract formation in workers. The research confirmed that microwave radiation can cause cataracts, though the exact biological mechanisms and exposure thresholds remained unclear. The study emphasized the need for systematic eye health monitoring of workers exposed to microwave radiation.
J.A. Tanner, C. Romero-Sierra · 1971
This 1971 technical report examined non-ionizing electromagnetic radiation as a form of atmospheric pollution, studying microwave effects on birds including collision patterns, neurological changes, and egg production impacts. The research investigated how microwave radiation might affect wildlife behavior and physiology, including brain wave patterns and nerve tissue damage.
G. Bertharion, B. Servantie, R. Joly · 1971
French researchers in 1971 studied how radar radiation affects brain electrical activity in white rats using electrocorticography (brain wave monitoring). This early research examined the central nervous system's response to high-frequency electromagnetic radiation from radar systems. The study represents pioneering work in understanding how EMF exposure influences brain function.
B. И. Банъков · 1971
Soviet researchers in 1971 exposed cats to low-frequency electromagnetic pulses at 5-7 Hz and found the fields induced drowsiness or sleep. Brain wave measurements, heart rate, and breathing patterns showed changes similar to natural physiological sleep, suggesting EMF can directly alter consciousness and brain states.
Michael J. Schmidt, Dennis E. Sokoloff, G. Alan Robison · 1971
This 1971 study examined how microwave radiation affects cyclic adenosine monophosphate (cAMP), a crucial brain chemical messenger, in different regions of rat brains. Researchers found that microwaves could rapidly preserve brain tissue while maintaining natural cAMP levels, revealing that this important cellular signaling molecule varies significantly across brain regions.
D. R. Justesen, D. M. Levinson, R. L. Clarke, Nancy W. King · 1971
Researchers in 1971 modified a commercial Tappan microwave oven to create a controlled laboratory system for studying how 2450 MHz microwave radiation affects small animals. They achieved precise power control from 400 watts down to less than 1 watt and confirmed uniform energy distribution throughout the oven cavity. This pioneering work established methods for measuring microwave exposure effects that became foundational for EMF research.
Frey AH · 1971
This 1971 review by researcher Allan Frey examined the sparse scientific data showing that low-power radiofrequency energy could affect the biological functioning of living organisms. Frey analyzed the limited Western research available at the time and explored potential mechanisms for these observed effects. The paper highlighted significant gaps in understanding and raised early concerns about potential health hazards for exposed personnel.
M. F. Tansy et al. · 1971
This 1971 study exposed rats to high-frequency radio waves and found significant changes in their digestive systems. The exposed animals showed weakened muscle contractions in their colons and faster stomach emptying compared to unexposed controls. This research demonstrates that RF radiation can disrupt normal gastrointestinal function in mammals.
Russell L. Carpenter, Elliot M. Livstone · 1971
Researchers exposed mealworm beetle pupae to 10 GHz microwave radiation and found that only 24% developed normally compared to 90% of unexposed controls. When they heated pupae to the same temperatures using regular heat instead of microwaves, 80% developed normally, proving the damage was caused by the microwaves themselves, not the heat they generated.
Allan H. Frey · 1971
This 1971 review by Allan Frey examined early research showing that low-power radiofrequency energy can affect biological functions in living organisms. The paper analyzed sparse Western research data and explored potential mechanisms behind these biological effects. Frey concluded that modulated RF energy poses possible hazards to personnel even at low power levels.
Ye. A. Lobanova, A.V. Goncharova · 1971
This 1971 Russian study examined how ultra-short and short wave electromagnetic radiation affected conditioned reflexes (learned behaviors) in white rats. The research investigated whether EMF exposure could disrupt the nervous system's ability to form and maintain learned responses. While specific findings aren't available, this early work explored EMF's potential impact on brain function and behavior.
Unknown authors · 1971
This 1971 investigation examined whether secret electromagnetic beam operations were connected to brain tumor cases, particularly astrocytomas. The study appears to have investigated potential links between undisclosed electromagnetic radiation exposure and neurological health effects. This represents early recognition that classified electromagnetic technologies might pose health risks to exposed populations.
J. B. MULDER · 1971
This 1971 review examined how electromagnetic energy waves, including visible and invisible light, affect animal behavior patterns. Researchers found that various forms of electromagnetic exposure altered reproductive ability, offspring sex ratios, activity levels, and lifespan in animals. However, studies showed widely inconsistent results even under seemingly similar conditions, highlighting the need for better controlled research.
Sol M. Michaelson, Joe W. Howland, Wm. B. Deichmann · 1971
Researchers exposed dogs to high-intensity microwave radiation at two frequencies (24,000 MHz and 1,285 MHz) for extended periods - up to 2,631 hours over 20 months. Despite power levels 400-500 times higher than typical cell phone exposure, no significant health effects were observed in the animals.
Lobanova EA, Goncharova AV · 1971
Soviet researchers in 1971 studied how ultrashort and short wave electromagnetic fields affected learned behaviors in white rats. This early research examined whether RF radiation could disrupt the conditioned reflexes that animals use for survival and adaptation. The study represents pioneering work investigating how electromagnetic fields might interfere with basic brain and nervous system functions.
Roger C. Nealeigh et al. · 1971
Researchers exposed white rats to 2.45 GHz microwave radiation (the same frequency used in microwave ovens and WiFi) at 50 mw/cm² and found it altered their performance on a Y-maze learning task. This 1971 study was among the first to demonstrate that microwave radiation can affect cognitive function and learning ability in laboratory animals.
Robert W. Neidlinger · 1971
This 1971 study by Neidlinger examined microwave radiation's ability to cause cataracts in humans. The research confirmed that microwave exposure can produce cataracts, though the exact mechanism wasn't well understood. The author called for systematic monitoring of workers exposed to microwaves to better understand this eye damage risk.
Shapiro AR, Lutomirski RF, Yura HT · 1971
This 1971 study developed mathematical models to calculate how microwave radiation penetrates and heats the human head structure. Researchers found that simplified flat-surface models drastically underestimate radiation absorption, while their spherical head model revealed complex heating patterns within brain tissue layers.
N. N. OSBORNE, B. POWELL, G. A. COTTRELL · 1971
This 1971 study examined how radiofrequency electrical stimulation affected amino acid levels in snail brain tissue. Researchers used Helix pomatia snails to investigate whether RF energy could alter brain chemistry at the molecular level. The study represents early biological research into how electromagnetic fields might influence nervous system function.
Sol M. Michaelson · 1971
This comprehensive 1971 review examined the biological effects of microwave radiation exposure, finding that organisms can experience thermal stress at specific frequencies and power levels. The analysis covered effects on multiple body systems including the eyes, blood formation, thyroid, reproductive organs, nervous system, and cardiovascular system. The review aimed to separate scientifically substantiated effects from speculative claims about microwave exposure risks.
T. W. Barrett · 1971
This 1971 theoretical physics study examined how electromagnetic fields carry information and how biological sensory systems might process that information. The research described different types of information units (quanta) that can exist within electromagnetic fields, including both amplitude and frequency modulated forms. The study concluded that researchers must determine the minimum information unit that any biological sensory system can detect.
B. Servantie, G. Bertharion, R. Joly · 1971
This 1971 French study exposed white rats to radar-frequency electromagnetic radiation and found that the animals became less sensitive to muscle-paralyzing drugs (curare-like agents). The researchers were investigating whether radar waves have biological effects beyond just heating tissue, and discovered that EMF exposure appeared to alter how the nervous system responds to pharmaceutical compounds.