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AN EMPIRICAL STUDY: THE IMPACT OF THE NUMBER OF USERS ON ELECTRIC FIELD STRENGTH OF WIRELESS COMMUNICATIONS.

Research RF Safe Research Library Jan 1, 2018

This study used real-time measurements on a university campus to examine how the number of users relates to RF electric field strength from cellular systems and a Wi-Fi access point. The authors report empirical models that estimate E from user counts, with stated accuracies of 86% for cellular-related measurements…

Spatial electromagnetic field intensity modelling of global system for mobile communication base stations in the Istanbul Technical University Ayazaga campus area.

Research RF Safe Research Library Jan 1, 2018

This study measured RF electric field intensities at 900 and 1800 MHz at 29 points on the Istanbul Technical University campus and produced spatial EMF intensity heat maps using GIS interpolation. Three interpolation methods were compared and the mapped measurements were evaluated against ICNIRP reference limits. All…

Effects of extremely low frequency electromagnetic fields on turkeys.

Research RF Safe Research Library Jan 1, 2018

This animal study exposed turkeys to ELF electromagnetic fields (50 Hz, 10 μT) for 3 weeks and assessed norepinephrine-activated β-adrenoceptor function via cAMP measurements over time. The authors report a time-dependent decrease in β-adrenoceptor function in exposed birds, while serum toxicological parameters…

Effects of 1950 MHz radiofrequency electromagnetic fields on Aβ processing in human neuroblastoma and mouse hippocampal neuronal cells.

Research RF Safe Research Library Jan 1, 2018

This in vitro study exposed HT22 mouse hippocampal neuronal cells and SH-SY5Y human neuroblastoma cells to 1950 MHz RF-EMF at SAR 6 W/kg for 2 hours per day over 3 days. RF-EMF exposure reduced mRNA levels of several Aβ-processing genes in HT22 cells, but did not change APP mRNA in SH-SY5Y cells. Protein levels of…

Microwave radiation leading to shrinkage of dendritic spines in hippocampal neurons mediated by SNK-SPAR pathway.

Research RF Safe Research Library Jan 1, 2018

This animal study exposed Wistar rats to microwave radiation (30 mW/cm for 6 minutes, three times per week for six weeks) and assessed cognition, hippocampal dendritic spines, ultrastructure, and SNK-SPAR pathway molecules. The authors report impaired spatial learning and memory, dendritic spine loss/shrinkage, and…

Autophagy mediates the degradation of synaptic vesicles: A potential mechanism of synaptic plasticity injury induced by microwave exposure in rats.

Research RF Safe Research Library Jan 1, 2018

This animal study used an in vivo microwave exposure model (30 mW/cm) and reports reversible neuronal injuries in rats. The authors observed cognitive impairment and synaptic plasticity injury in hippocampal neurons following exposure. Autophagy was activated, and autophagosomes showed increased association with…

From the Cover: 2.45-GHz Microwave Radiation Impairs Hippocampal Learning and Spatial Memory: Involvement of Local Stress Mechanism-Induced Suppression of iGluR/ERK/CREB Signaling.

Research RF Safe Research Library Jan 1, 2018

This mouse study examined low-level 2.45 GHz continuous-wave microwave exposure for 2 hours/day over 15, 30, or 60 days. The authors report impaired learning and spatial memory performance on an 8-arm radial maze after exposure. They also report increased corticosterone and stress/inflammatory-related markers with…

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…

Influence of the on-line ELF-EMF stimulation on the electrophysiological properties of the rat hippocampal CA1 neurons in vitro.

Research RF Safe Research Library Jan 1, 2017

This paper describes an on-line ELF magnetic stimulation setup and evaluates coil field distribution using COMSOL simulations alongside physical measurements. The authors report that modeled and measured magnetic flux densities were similar, and that stimulation induced sodium channel currents and fEPSPs in rat…

Theta-gamma coupling in hippocampus during working memory deficits induced by low frequency electromagnetic field exposure.

Research RF Safe Research Library Jan 1, 2017

This mouse study examined whether 50 Hz, 1 mT electromagnetic field exposure affects working memory and hippocampal electrophysiology. The authors report reduced Y-maze working memory performance after 3 days of EMF exposure, accompanied by decreased hippocampal firing rates. They also report reduced theta and…

Effects of Electromagnetic Radiation from Smartphones on Learning Ability and Hippocampal Progenitor Cell Proliferation in Mice.

Research RF Safe Research Library Jan 1, 2016

This mouse study examined chronic smartphone electromagnetic radiation exposure and its effects on spatial working memory and hippocampal progenitor cell proliferation. The authors report no significant differences in Y-maze spontaneous alternation or BrdU-labeled progenitor proliferation after exposure, but…

Exposure to 900 MHz electromagnetic fields activates the mkp-1/ERK pathway and causes blood-brain barrier damage and cognitive impairment in rats

Research RF Safe Research Library Mar 19, 2015

This animal study exposed 108 male Sprague-Dawley rats to 900 MHz EMF (1 mW/cm2) or sham for 14 or 28 days (3 h/day). The authors report that 28-day exposure was associated with impaired spatial memory, BBB permeability damage, and ultrastructural changes in hippocampus and cortex. They also report increased mkp-1…

2.45 GHz Microwave Radiation Impairs Learning and Spatial Memory via Oxidative/Nitrosative Stress Induced p53-Dependent/Independent Hippocampal Apoptosis: Molecular Basis and Underlying Mechanism

Research RF Safe Research Library Jan 1, 2015

This animal study exposed male Swiss mice to 2.45 GHz continuous-wave microwave radiation for 2 hours/day over 15, 30, or 60 days. The authors report increased hippocampal oxidative/nitrosative stress and increased apoptosis in neuronal and nonneuronal hippocampal subfields. They also report duration-dependent…

Electromagnetic radiation (Wi-Fi) and epilepsy induce calcium entry and apoptosis through activation of TRPV1 channel in hippocampus and dorsal root ganglion of rats

Research RF Safe Research Library Jan 1, 2014

This animal study examined 2.45 GHz Wi-Fi exposure in a PTZ-induced epilepsy rat model using freshly isolated hippocampal and DRG neurons. The authors report that epilepsy increased Ca(2+) influx, oxidative stress markers, and apoptosis-related outcomes, and that Wi-Fi exposure produced additional increases in…

Spatial learning, monoamines and oxidative stress in rats exposed to 900 MHz electromagnetic field in combination with iron overload.

Research RF Safe Research Library Jan 1, 2014

This animal study tested whether 900 MHz EMF exposure, alone or combined with brain iron overload, affects cognition and brain biochemistry in Long-Evans rats. EMF-exposed rats showed impairment in an object exploration task and changes in monoamine content (notably in the hippocampus), while other spatial…

[A aquaporin 4 expression and effects in rat hippocampus after microwave radiation].

Research RF Safe Research Library Jan 1, 2009

This rat study examined hippocampal aquaporin 4 (AQP4) expression after microwave exposure at 10, 30, or 100 mW/cm^2. The authors report increased AQP4 protein and gene expression after exposure, with recovery at lower power density but more persistent elevation at higher power density. They conclude that increased…

[Influence of electromagnetic radiation on raf kinase inhibitor protein and its related proteins of hippocampus].

Research RF Safe Research Library Jan 1, 2008

This rat study examined hippocampal RKIP and related markers after exposure to high power microwaves (X-band and S-band) or an electromagnetic pulse. RKIP protein decreased at 6 hours post-exposure, with recovery by 1 day in the EMP group but more prolonged decreases (up to ~7 days) in the microwave groups.…

[Measurements of professional exposure to ELF fields in some production areas within the territory of Regione Campania and comparison with the action values according to 2004/40/CE Directive].

Research RF Safe Research Library Jan 1, 2007

This occupational exposure assessment measured ELF magnetic fields in 400 workers across 80 work areas in several production sectors in Regione Campania. Measurements were taken continuously over two shifts and processed into RMS magnetic-field values. The authors report no exceedance of the EU 2004/40/CE action…

[Assessment of radiofrequency electromagnetic fields levels in the Taranto area].

Research RF Safe Research Library Jan 1, 2007

This study reports punctual monitoring of RF electromagnetic fields from radiobase stations in the Taranto area, with measurement campaigns conducted from November 2005 to March 2007. Measurements covered 108 transmitting stations across multiple communication technologies within 100 kHz to 3 GHz. Most monitored…

The effect of pulsed and sinusoidal magnetic fields on the morphology of developing chick embryos

Research RF Safe Research Library Jan 1, 1997

This animal study reports results from five experimental campaigns over five years examining weak magnetic field exposure and morphological abnormalities in White Leghorn chick embryos. Four campaigns reported statistically significant increases in abnormality rates, while one pulsed-field campaign showed only a…

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