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Showing results for: electromagnetic fields

Non-conductive and miniature fiber-optic imaging system for real-time detection of neuronal activity in time-varying electromagnetic fields.

Research RF Safe Research Library Jan 1, 2017

This paper describes a non-conductive, miniature fiber-optic imaging system designed to record neuronal activity in real time during repetitive, long-term time-varying EMF exposure. Using the system, the authors report that short exposures (

The Effects of Precautionary Messages about Electromagnetic Fields from Mobile Phones and Base Stations Revisited: The Role of Recipient Characteristics.

Research RF Safe Research Library Jan 1, 2017

This survey experiment tested how precautionary messages about RF-EMFs from mobile phones and base stations affect recipients' threat perceptions and emotional distress. The effect of precautionary information on threat perception depended on individual differences, particularly trait anxiety and gender. The study…

Long-Term Evolution Electromagnetic Fields Exposure Modulates the Resting State EEG on Alpha and Beta Bands.

Research RF Safe Research Library Jan 1, 2017

This study evaluated whether exposure to EMF from an LTE system (described as equivalent to maximum LTE mobile phone emission) alters resting-state EEG. The abstract reports reduced spectral power and reduced interhemispheric coherence in alpha and beta bands in frontal and temporal regions. It also reports no…

Effect of extremely low-frequency electromagnetic fields on antioxidant activity in the human keratinocyte cell line NCTC 2544.

Research RF Safe Research Library Jan 1, 2017

This in vitro study exposed human keratinocyte cells (NCTC 2544) to 50 Hz ELF-EMF at 0.25–2 G and assessed oxidative stress-related endpoints. Significant increases in ROS were reported at 0.5 and 1 G, with associated short-term changes in antioxidant and lipid peroxidation markers. The authors report that…

Protective effects of melatonin and omega-3 on the hippocampus and the cerebellum of adult Wistar albino rats exposed to electromagnetic fields.

Research RF Safe Research Library Jan 1, 2017

This rat study examined 900 MHz EMF exposure for 60 minutes per day over 15 days and assessed hippocampal and cerebellar outcomes, behavior, and serum enzyme activity. The EMF-only group showed significant neuronal cell losses in multiple brain regions and worse passive avoidance performance compared with other…

Effects of short and long term electromagnetic fields exposure on the human hippocampus.

Research RF Safe Research Library Jan 1, 2017

This study compared 60 healthy female medical students grouped by self-reported daily mobile phone use by the head (90 min). MRI/MRS analyses found no significant differences in hippocampal volume or in choline, creatine, and N-acetyl aspartate between groups. However, the higher-use group showed poorer performance…

Does omega-3 have a protective effect on the rat adrenal gland exposed to 900 MHz electromagnetic fields?

Research RF Safe Research Library Jan 1, 2017

This animal study examined whether omega-3 modifies adrenal gland changes in rats exposed to 900 MHz electromagnetic fields. Rats exposed 60 minutes/day for 15 days showed significantly increased adrenal gland volume versus controls. Omega-3 co-treatment was associated with significantly lower adrenal gland volume…

Iron deposition in rabbit cerebellum after exposure to generated and mobile GSM electromagnetic fields.

Research RF Safe Research Library Jan 1, 2017

This animal study examined iron distribution in rabbit cerebellum after exposure to RF electromagnetic fields, using light and scanning electron microscopy with energy-dispersive microanalysis. The authors report dystrophic changes in Purkinje cells in irradiated groups and deposits containing multiple elements…

Effects of extremely low frequency electromagnetic fields on morphine analgesia and tolerance in rats.

Research RF Safe Research Library Jan 1, 2017

This animal study examined whether extremely low frequency electromagnetic field exposure alters morphine analgesia and tolerance in rats. Rats exposed to a 50 Hz magnetic field (reported as 5 mT) showed higher morphine analgesic effects than rats given morphine without field exposure. In morphine-tolerant rats,…

Effect of electromagnetic fields on human osteoarthritic and non-osteoarthritic chondrocytes.

Research RF Safe Research Library Jan 1, 2017

This in vitro study exposed human osteoarthritic and non-osteoarthritic chondrocyte pellets to a sinusoidal 15 Hz electromagnetic field at 5 mT or 8 mT for 7 days. Under 5 mT, osteoarthritic chondrocytes showed increased expression of cartilage-related genes (COL2A1 and ACAN) compared with controls, while…

Comments on "Radiofrequency electromagnetic fields and some cancers of unknown etiology: An ecological study".

Research RF Safe Research Library Jan 1, 2017

This correspondence discusses a prior ecological study examining a possible association between RF-EMF exposure in Albacete, Spain and cancer incidence. The cancers mentioned include lymphomas and brain tumors. The correspondence indicates that shortcomings of the ecological study are discussed, but does not detail…

Electromagnetic fields at a mobile phone frequency (900 MHz) trigger the onset of general stress response along with DNA modifications in Eisenia fetida earthworms.

Research RF Safe Research Library Jan 1, 2017

This animal study exposed Eisenia fetida earthworms to 900 MHz electromagnetic fields at 10–120 V/m for 2 hours (with additional tests of longer exposure, modulation, and recovery). The authors report significant DNA modifications across exposure treatments and a decrease in probe hybridisation sites persisting after…

Radiofrequency electromagnetic fields and some cancers of unknown etiology: An ecological study.

Research RF Safe Research Library Jan 1, 2017

This preliminary ecological study examined whether RF-EMF exposure in Albacete (Spain) correlated with incidence of lymphomas and brain tumors from January 2012 to May 2015. Personal RF-EMF exposure was measured across 14 frequency bands using an EME Spy 140 exposimeter and compared with tumor incidence by…

Effect of electromagnetic fields and antioxidants on the trace element content of rat teeth.

Research RF Safe Research Library Jan 1, 2017

This animal study examined whether extremely low-frequency electromagnetic fields (ELF-EMFs) from a high-voltage source alter trace element concentrations in rat teeth and whether antioxidants (melatonin and glutathione) modify these changes. Rats were exposed 8 hours/day for 26 or 52 days, with separate sham…

Effects of four kinds of electromagnetic fields (EMF) with different frequency spectrum bands on ovariectomized osteoporosis in mice.

Research RF Safe Research Library Jan 1, 2017

This animal study tested four frequency-band EMF exposures (1–50,000 Hz variants) in an ovariectomized mouse model of osteoporosis over 8 weeks (3 h/day). Low- and band-pass exposures increased bone formation markers and osteogenesis-related gene expression, while high-pass exposure decreased both formation and…

Alterations of Immune Parameters on Trichoplusia ni (Lepidoptera: Noctuidae) Larvae Exposed to Extremely Low-Frequency Electromagnetic Fields.

Research RF Safe Research Library Jan 1, 2017

This animal study exposed Trichoplusia ni larvae to 60 Hz, 2.0 mT ELF-EMF for 24, 48, or 72 hours and assessed immune parameters and fertility. The abstract reports no effect on life cycle and fertility after 24 hours, but several immune-related measures changed after 48–72 hours, including reduced hemolymph protein…

Quantum mechanical model for the anticarcinogenic effect of extremely-low-frequency electromagnetic fields on early chemical hepatocarcinogenesis.

Research RF Safe Research Library Jan 1, 2017

This study develops a quantum-mechanical radical pair mechanism model to examine how an extremely-low-frequency electromagnetic field (ELF-EMF) might influence early chemical hepatocarcinogenesis in rats. The model evaluates singlet-state recombination and quantum yield under a low magnetic field effect, proposing…

Semi-quantitative proteomics of mammalian cells upon short-term exposure to non-ionizing electromagnetic fields.

Research RF Safe Research Library Jan 1, 2017

This in vitro study used proteome-wide semi-quantitative mass spectrometry to assess molecular changes after short-term exposure to ELF (50 Hz), UMTS (2.1 GHz), and WiFi (5.8 GHz) in human and mouse cell types. The authors report that fewer than 1% of quantified proteins changed slightly in abundance and that…

Efficacy of 50 Hz electromagnetic fields on human epidermal stem cell transplantation seeded in collagen sponge scaffolds for wound healing in a murine model.

Research RF Safe Research Library Jan 1, 2017

This animal study evaluated whether 50 Hz EMF exposure enhances wound healing after transplantation of human epidermal stem cells (ESC) seeded in collagen sponge scaffolds. Thirty-six nude mice with full-thickness wounds were assigned to control, ESC-only, or ESC+EMF groups (50 Hz, 5 mT, 60 min/day for 20 days). The…

Electromagnetic Fields Act Similarly in Plants as in Animals: Probable Activation of Calcium Channels via Their Voltage Sensor

Research RF Safe Research Library Jan 1, 2016

This narrative review proposes that low-intensity microwave/lower-frequency EMFs activate plasma membrane calcium channels in animals, increasing intracellular calcium and triggering downstream signaling including oxidative stress pathways. It further suggests that EMF actions in terrestrial multicellular plants are…

Microwave frequency electromagnetic fields (EMFs) produce widespread neuropsychiatric effects including depression

Research RF Safe Research Library Jan 1, 2016

This 2016 narrative review proposes that non-thermal microwave/lower-frequency EMFs act primarily through activation of voltage-gated calcium channels (VGCCs), with calcium channel blockers reported to block EMF effects. It summarizes animal, occupational, and epidemiological literature and reports that exposures…

Effects of Grounding on Body Voltage and Current in the Presence of Electromagnetic Fields

Research RF Safe Research Library Jan 1, 2016

This test–retest study measured AC body voltage and current in 50 participants near a lamp and other household appliances, comparing ungrounded versus grounded conditions. Grounding was associated with a reported 58-fold reduction in AC body voltage. The authors report that currents during grounding were far below…

Effects of extremely low frequency electromagnetic fields on in-vitro cellular cultures HeLa and CHO.

Research RF Safe Research Library Jan 1, 2016

This in-vitro study examined whether 50 Hz extremely low frequency electromagnetic fields affect proliferation in HeLa and CHO cell cultures. The abstract reports increased proliferation in exposed cells versus controls, with the largest reported increase under repetitive exposure at 2.49 mT (40 minutes every 12…

[Genic and non-genic regulation of low frequence pulsed electromagnetic fields on osteoblasts differentiation].

Research RF Safe Research Library Jan 1, 2016

This in vitro study exposed rat calvarial osteoblasts to 50 Hz, 0.6 mT pulsed electromagnetic fields for 1.5 hours and measured early differentiation-related markers over 0–12 hours. The abstract reports increased ALP activity at 3 hours and time-dependent changes in ALP, Runx2, and OSX transcription and Runx2/OSX…

[Effects of 1.8 mT sinusoidal alternating electromagnetic fields of different frequencies on bone biomechanics of young rats].

Research RF Safe Research Library Jan 1, 2016

This randomized animal experiment exposed 32 young female rats to 1.8 mT sinusoidal alternating electromagnetic fields at 10, 25, or 40 Hz for 90 minutes per day. The 10 Hz and 40 Hz groups had higher BMD and improved femur and lumbar vertebra biomechanical properties compared with controls, and micro-CT suggested…

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