6,486 Studies Reviewed. 85.2% of Original Studies Found Biological Effects. The Evidence is Clear.

EMF Research Studies

Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.

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Showing 2,030 studies in Brain & Nervous System

Resonance absorption of microwave by the human skull

Joines WT, Spiegel RJ · 1974

Researchers modeled the human skull as six concentric layers (skin, fat, bone, dura, cerebrospinal fluid, and brain) and calculated microwave absorption across the 0.1-3 GHz band for skull radii of 7 cm and 10 cm. The inhomogeneous model showed a broad absorption peak near 2.1 GHz with peak values of 1.52 for the 7 cm radius and 3.38 for the 10 cm radius, a peak not present in the homogeneous model.

Lethal Effects of 3000 MHz Radiation on the Rat

John Schrot, T. Daryl Hawkins · 1974

At each exposure duration, mortality increased with higher incident energy density, and the energy density required to kill 50% of rats rose from 1.18 to 1.67 W-min/cm² as duration increased from 30 to 240 seconds. The corresponding lethal power density fell from 2.36 to 0.42 W/cm², an 85% decrease across the duration range. Heavier rats weighing 195 to 210 g were more vulnerable than lighter rats weighing 180 to 194 g.

Brain & Nervous SystemNo Effects Found

Microwave Cataracts

B. Appleton · 1974

Biomicroscopically detectable lens signs considered precursors of cataract occurred equally in both groups. A registry of seven acute high-level microwave exposures found no superficial burns or eye damage, with ocular status consistent with age. The authors concluded that lens damage probably has not occurred from cumulative low-level exposure and probably could not occur from acute exposure without severe facial burns. A separate study of 19 diathermy workers showed no difference in ocular examinations compared to controls.

ELECTROPHYSIOLOGICAL EFFECTS OF ELECTROMAGNETIC FIELDS ON ANIMALS

Arthur W. Guy, James C. Lin, C.K. Chou · 1974

Researchers conducted in vivo and in vitro studies of nervous tissues exposed to microwave radiation. Continuous-wave microwaves affected conduction and transmission latencies and amplitudes of evoked potentials in the central nervous system of anesthetized cats, isolated cat nerves, and rabbit ganglia similarly to localized conduction heat. Temperature rises were always associated with any observable changes in the nervous tissues exposed to continuous-wave irradiation. The threshold for latency changes occurred between 2.5 and 5.0 W/kg of absorbed power density, about one-quarter to one-half of the normal metabolic rate of brain tissue.

The Impact of Electrical Energies on Psychodynamics

Eldon Byrd · 1974

The author states that the paper will explore recent findings concerning possible external and internal electrical influences on psychodynamic development and states. Rhythms are described as the central theme, with their initiation, maintenance, and correlation at the core of normal and pathological psychodynamic states. Severe brain damage eliminates adrenal steroid hormone circadian rhythm. The deaf can respond to pulse-modulated electronic transmitters, implying a possible cellular response integrated by an organ or the brain.

QUANTITATION OF MICROWAVE RADIATION EFFECTS ON THE EYES OF RABBITS AT 2450 MHz AND 918 MHz

Arthur W. Guy, James C. Lin, Piro O. Kramar, Ashley F. Emery · 1974

Absorbed power peaked in the vitreous body at 0.92 mW/cm² per 1 mW/cm² incident power. Eye temperatures reached plateaus after 15-20 minutes, with 100 mW/cm² staying below 41°C while 200 and 300 mW/cm² exceeded 41°C. Eighty-one rabbits were used to determine the cataractogenic threshold for 2450 MHz radiation.

THE USE OF MICROWAVE HEATING TO INACTIVATE CHOLINESTERASE IN THE RAT BRAIN PRIOR TO ANALYSIS FOR ACETYLCHOLINE

W. B. STAVINOHA, S. T. WEINTRAUB, A. T. MODAK · 1973

Uniform cholinesterase inactivation was achieved in rat brain within 4 s and in mouse brain within 2 s. In rats, whole-brain acetylcholine was 25-4 + 1-5 nmol/g after irradiation compared to 13:8 + 1-7 nmol/g after standard sacrifice. In mice, whole-brain acetylcholine was 25:5 + 2:6 nmol/g after irradiation compared to 13-7 + 1:7 nmol/g after standard sacrifice.

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