Stark KD, Krebs T, Altpeter E, Manz B, Griot C, Abelin T · 1997
Researchers conducted a pilot study comparing two dairy herds at 500 m and 4,000 m from a short-wave radio transmitter, monitoring five cows per farm for salivary melatonin over ten days. The average nightly field strength was 21-fold higher on the exposed farm (1.59 mA/m) than on the control farm (0.076 mA/m). No significant difference in melatonin was seen during the first two nights, but on the first night after the transmitter was turned back on following a three-day off period, melatonin concentration was significantly higher on the exposed farm (3.89 pg/ml, CI: 2.04, 7.41), indicating a two- to seven-fold increase.
Rojavin MA, Ziskin MC · 1997
Researchers injected BALB/c mice with ketamine 80 mg/kg or chloral hydrate 450 mg/kg and exposed them to 61.22 GHz millimeter waves at 420 W/kg peak specific absorption rate for 15 minutes. Millimeter wave exposure increased anesthesia duration by about 50% compared to sham exposure, which had no effect.
Lai, H, Singh, NP, · 1997
Researchers investigated the effects of microwave exposure on DNA strand breaks in rat brain cells. They found that treating rats with either melatonin or the spin-trap compound PBN immediately before and after radiofrequency electromagnetic radiation exposure blocked the DNA strand breaks. Because both substances are free radical scavengers, the researchers hypothesized that free radicals are involved in the radiofrequency electromagnetic radiation-induced DNA damage.
Lai H, Singh NP · 1997
Researchers investigated whether melatonin and the spin-trap compound N-tert-butyl-alpha-phenylnitrone (PBN) could block the effect of magnetic fields on brain cell DNA. Rats were injected with melatonin or PBN immediately before and after two hours of exposure to a 60-Hz magnetic field at an intensity of 0.5 mT. Both drug treatments blocked the magnetic field-induced DNA single- and double-strand breaks in brain cells, as measured by a microgel electrophoresis method.
Tynes T, Hannevik M, Andersen A, Vistnes AI, Haldorsen T · 1996
The Norwegian cohort consisted of 2,619 women certified as radio and telegraph operators between 1920 and 1980. Cancer incidence was analyzed using the standardized incidence ratio with the Norwegian female population as the comparison group. The standardized incidence ratio for all cancers was 1.2, while breast cancer showed an excess risk with an SIR of 1.5. A nested case-control analysis found an association between breast cancer in women aged 50 and older and shift work. After adjusting for fertility factors, the rate ratio for breast cancer associated with being a radio and telegraph operator was 1.5 compared to all Norwegian women born 1935 or later.
Mann, K, Roschke, J · 1996
Researchers investigated the influence of pulsed high-frequency electromagnetic fields from digital mobile radio telephones on sleep in healthy humans. They found a hypnotic effect that shortened sleep onset latency and a REM suppressive effect that reduced REM sleep duration and percentage. Spectral analysis showed qualitative alterations of the EEG signal during REM sleep with increased spectral power density.
S.M. Bawin, I. Sabbot, B. Bystrom, P.M. Sagan, W.R. Adey · 1979
Researchers exposed groups of 30 male albino rats to vertical 60 Hz electric fields at 0, 50, 500, and 1000 V/m for 30 days. Throughout the 44-day experiment they measured body weight, water and food consumption, urine output, and general activity.
Robert C. Manthei, Zorach R. Glaser · 1976
Eight adult male Dutch rabbits received daily 2-hour exposures to pulsed 3.7 GHz microwaves at 10 mW/cm² for 60 days while chronic ECoG, EOG, and EMG recordings were made on a 24-hour basis. The implant assembly allowed chronic post-irradiation recording with no metallic elements on the animals during microwave exposure. Logic circuitry quantified the frequency and duration of paradoxical sleep episodes. Preliminary data from control rabbits showed paradoxical sleep occupied 25-35 minutes of total sleep time in 3-8 minute segments across 16-hour recordings. The authors reported it was too early to determine whether microwave exposure affected paradoxical sleep.
Siekierzynski M et al. · 1976
Clinton C. Brown · 1975
Gibson, Moroney · 1974
Thirty-four subjects were exposed to weak constant vertical magnetic fields of about 5,000 gammas, a 10% increment over the ambient geomagnetic field, in a repeated-measures design with two sessions. Calculation attempts were significantly lower in the first trial of the field-on session than in the second trial, the field-off session showed no significant change, and the overall ANOVA across trials was significant.
E. Stanton Maxey, M.D. · 1974
D. Michael Bitz, Malcolm L. Sargent · 1974
The magnetic fields had no significant effect on growth rate or circadian period (conidiation rhythm) at P < 0.05. No reproducible changes in morphology, conidiation, or pigmentation were observed.
JAMES P. MILLER · 1974
Frank A. Brown, Jr. · 1972
Alexander Dubrov · 1972
Dubrov worked in heliobiology studying the effects of solar activity and natural magnetic and electric fields on living organisms. He found that cell membrane permeability is under direct control of the geomagnetic field. Chizhevsky showed that epidemics, diseases and death rates follow 11-year cycles similar to sunspot cycles.
B. И. Банъков · 1971
Jürgen Aschoff · 1969
Norbert T. Christman et al. · 1969
The study was designed to evaluate the feasibility of producing sleep in a variety of subjects without the use of sedatives and narcotics. The study used a two-fold approach: detecting physiological changes in evoked scalp potentials from small rectangular currents averaging 0 to 1.5 milliamperes, and detecting changes in evoked potentials from the induced sleep state. Squirrel monkeys were used initially to standardize the recording technique and determine physiological effects of the currents, followed by human volunteers for the quantitative sleep study.
LESZEK CIECIURA et al. · 1969
V. I. Bankov · 1968
Researchers exposed cats to a low-frequency modulated pulse electromagnetic field at 5 to 7 cycles per second with intensity up to 300 oersted. The exposure caused a state of drowsiness or sleep in the cats.
Unknown authors · 1967
Surface anodal polarization depolarizes deep pyramidal neurons while hyperpolarizing superficial elements. Surface cathodal polarization produces the opposite effects. Anodal polarization of the ventricular surface hyperpolarizes hippocampal pyramidal neurons, whereas cathodal polarization depolarizes them.
V. N. Gur'yev, S. M. Kirov · 1965
Franz Halberg · 1959
Frank A. Brown, Jr.
