Glover PM, Eldeghaidy S, Mistry TR, Gowland PA. · 2007
Researchers exposed seven people to strong pulsed magnetic fields (similar to those in MRI machines) while measuring their brain's visual processing responses. They found no significant changes in how the brain processed visual information during or after the 10-minute exposure. This contradicts some earlier studies that found effects from different types of magnetic field exposure.
Terao Y et al. · 2007
Researchers tested whether 30 minutes of mobile phone exposure affects eye movement control (saccades) in 10 healthy adults. They measured various types of rapid eye movements before and after exposure to 800 MHz radiation at 0.054 W/kg SAR. The study found no significant changes in eye movement performance, suggesting short-term mobile phone use doesn't impair this aspect of brain function.
Stefanics G et al. · 2007
Researchers tested whether 10 minutes of cell phone radiation affects how quickly the brain processes sound by measuring auditory brainstem responses (electrical signals from the hearing pathway to the brain) in 30 healthy young adults. They found no measurable changes in brain response timing after exposure to 900 MHz radiation from a Nokia phone at typical usage levels. This suggests short-term phone calls don't immediately disrupt the brain's basic hearing functions.
Perentos N, Croft RJ, McKenzie RJ, Cvetkovic D, Cosic I · 2007
Researchers exposed 12 people to mobile phone-like radio frequency radiation for 15 minutes to see if it changed their brain wave patterns (EEG). Unlike some previous studies, they found no changes in brain activity from either pulsed or continuous RF exposure. The researchers used a more realistic exposure setup that better mimicked actual phone use.
Joubert V, Leveque P, Cueille M, Bourthoumieu S, Yardin C. · 2007
French researchers exposed rat brain neurons to cell phone radiation (900 MHz GSM) for 24 hours at levels similar to phone use, then tested whether the radiation caused brain cells to die through a process called apoptosis. Using three different measurement methods, they found no increase in cell death compared to unexposed neurons. This suggests that brief cell phone radiation exposure may not directly damage brain cells in the way some scientists have theorized.
Irlenbusch L et al. · 2007
German researchers exposed 33 people to cell phone radiation at 902.4 MHz for 30 minutes to see if it affected their ability to detect light (visual discrimination threshold). They found no statistically significant changes in visual sensitivity between real exposure and fake exposure sessions. This suggests that brief GSM radiation exposure at typical power levels doesn't immediately impair basic visual function.
Hirose H et al. · 2007
Researchers exposed human brain and lung cells to cell phone tower radiation at levels up to 10 times higher than public safety limits to test whether it triggers heat shock proteins (cellular stress markers). After continuous exposure for up to 48 hours, they found no increase in these stress proteins compared to unexposed cells. This suggests that cell phone tower radiation at these levels doesn't cause detectable cellular stress responses.
Haarala C et al. · 2007
Finnish researchers tested whether mobile phone radiation affects thinking skills by having 36 men perform cognitive tasks while exposed to different types of phone signals on either the left or right side of their heads. They found no measurable differences in mental performance between real phone radiation exposure and fake exposure, regardless of which side of the head was exposed. The study suggests that typical mobile phone use doesn't impair basic cognitive functions like memory or attention in healthy adults.
Panagopoulos DJ, Chavdoula ED, Nezis IP, Margaritis LH · 2007
Greek researchers exposed fruit flies to cell phone radiation at 900 MHz and 1800 MHz frequencies for just 6 minutes daily over 6 days, then examined their reproductive cells for DNA damage. They found widespread cell death and DNA fragmentation in egg-producing cells that normally don't die during early development. This cell death explained why the flies' egg production dropped dramatically in the researchers' previous studies.
Krause CM, Pesonen M, Haarala Bjornberg C, Hamalainen H. · 2007
Finnish researchers exposed 72 men to cell phone radiation at 902 MHz while they performed memory tasks, measuring brain wave activity through EEG recordings. The study found that phone radiation caused subtle changes in brain oscillations (electrical activity patterns) in the alpha frequency range, though these effects were inconsistent and didn't affect actual task performance. This adds to growing evidence that cell phone radiation can influence brain activity, even when users don't notice any immediate behavioral changes.
Clark ML et al. · 2007
Researchers measured hormone levels in women living near radio and TV broadcasting towers to see if electromagnetic field exposure affected their bodies' natural chemical processes. They found that postmenopausal women with higher exposure to radiofrequency radiation and power line magnetic fields showed increased levels of estrogen metabolites in their urine, particularly those women who also had low melatonin levels. This suggests that EMF exposure may disrupt normal hormone regulation in older women.
Guney M, Ozguner F, Oral B, Karahan N, Mungan T. · 2007
Researchers exposed female rats to 900 MHz radiofrequency radiation (similar to cell phone frequencies) for 30 minutes daily over 30 days and examined the effects on endometrial tissue (the lining of the uterus). The radiation caused significant oxidative damage and tissue inflammation in the endometrium, but these harmful effects were largely prevented when the rats were given vitamins E and C. This suggests that cell phone-frequency radiation may damage reproductive tissues through oxidative stress, but antioxidant protection could help mitigate these effects.
Elhag MA, Nabil GM, Attia AM. · 2007
Researchers exposed rats to mobile phone radiation using two different patterns. Both exposures significantly reduced protective antioxidants like vitamin C and vitamin E by up to 60%. Single intense exposures caused more antioxidant damage than repeated shorter exposures, suggesting exposure timing affects cellular protection.
Zhao TY, Zou SP, Knapp PE. · 2007
Researchers exposed brain cells (neurons and astrocytes) from cell cultures to radiation from a 1900 MHz cell phone for just 2 hours. They found that this exposure activated genes that trigger cell death, with brain neurons being more sensitive than support cells. The concerning part is that these cellular death pathways were triggered even when the phone was in standby mode, not just during active calls.
Baohong W et al. · 2007
Chinese researchers exposed human immune cells to 1.8 GHz microwave radiation and UV light. Microwaves alone caused no DNA damage, but when combined with UV, they disrupted normal DNA repair - initially reducing damage then increasing it hours later, suggesting unpredictable interference with cellular repair mechanisms.
Todorović D, Kalauzi A, Prolić Z, Jović M, Mutavdzić D. · 2007
Researchers exposed endangered longhorn beetles to weak magnetic fields (2 milliTesla) for five minutes and monitored their brain nerve activity. The magnetic field caused permanent changes to nerve cell activity in 7 out of 8 beetles tested, with some neurons becoming more active and others less active. This demonstrates that even brief exposure to relatively weak magnetic fields can cause lasting changes to nervous system function in living organisms.
Shen JF, Chao YL, Du L. · 2007
Researchers exposed rat nerve cells from the trigeminal ganglion (which controls facial sensation) to static magnetic fields at 125 millitesla and measured how this affected potassium channels that help control nerve cell activity. They found that the magnetic field altered how these channels turned off (inactivated), potentially disrupting normal nerve function. This suggests that moderate-strength magnetic fields can physically deform cell membranes and change how critical ion channels operate.
Balci M, Devrim E, Durak I · 2007
Researchers assigned forty female albino Wistar rats to one of four groups to study the effects of mobile phone radiation on oxidant/antioxidant balance in corneal and lens tissues. One group received mobile phone radiation for 4 weeks, a second group received radiation plus a daily oral dose of vitamin C (250 mg/kg), a third group received vitamin C alone, and a fourth group served as a control. In corneal tissue, MDA level and CAT activity significantly increased and SOD activity was significantly decreased in the mobile phone group compared with the control group. In lens tissue, only the MDA level significantly increased in the mobile phone group relative to the control group, while SOD, GSH-Px, and CAT did not differ significantly between groups.
Stevens P · 2007
Researchers studied whether exposure to a 0–5 µT magnetic field at EEG alpha-band frequencies (8–12 Hz) would affect emotional state. Participants reported a change in emotional state following exposure, and a decrease in global field power was observed. The frontal alpha-asymmetry that would physiologically indicate a directly induced emotional state was absent, and researchers suggested that participant experiences were due to an interpretation of the effects of MF exposure.
Shin EJ et al. · 2007
Researchers examined the role of dopaminergic receptors in behavioral changes induced by extremely low frequency magnetic fields (ELF-MF). Exposure to ELF-MF at 2.4 mT for 1 hour per day, for one or seven days, enhanced locomotor activity in a time-dependent manner. The results suggest that ELF-MF-induced behavioral responses are, at least in part, mediated by activation of dopamine D1-like receptors.
Manikonda PK et al. · 2007
Researchers exposed rats to 50 Hz magnetic fields at 50 and 100 μT intensities for 90 days and then examined hippocampal tissue. Compared to controls, ELF exposure was associated with increased intracellular calcium levels and changes in the activity of several calcium-related enzymes. Binding to NMDA receptors was also found to be decreased in exposed rats. The researchers suggested that perturbed neuronal functions caused by ELF exposure may involve altered calcium signaling contributing to aberrant NMDA receptor activities.
Jadidi M et al. · 2007
Researchers used a water maze to evaluate how magnetic field exposure affects consolidation and retrieval of spatial memory in rats. Exposure to a 50 Hz, 8 mT magnetic field for 20 minutes immediately after training impaired retention performance, but exposure at 2 mT did not. Exposure given shortly before retention testing had no effect on performance.
Ishay JS et al. · 2007
Researchers kept Oriental hornet workers in an Artificial Breeding Box and exposed them to an AC magnetic field of a magnitude of B = 50-70 mGauss, comparing the combs they built with those from a control group exposed only to the natural terrestrial magnetic field. Exposed hornets built combs with a 35-55% smaller number of cells and fewer eggs, many deformed and imperfectly hexagonal cells, and more delicate and slender comb stems.
Carrubba S, Frilot C, Chesson AL, Marino AA. · 2007
Regel SJ et al. · 2007
Researchers exposed the heads of 15 healthy male subjects for 30 min prior to sleep to a pulse-modulated EMF signal at different intensities or a sham condition, in a double-blind, crossover design. The active exposure levels used peak spatial specific absorption rates of 0.2 W kg–1 and 5 W kg–1. Sleep EEG analysis showed a dose-dependent increase of power in the spindle frequency range in non-REM sleep, while sleep architecture was not affected. Reaction speed slowed with increasing field intensity in the 1-back task, but accuracy in the CRT and N-back tasks was not affected in a dose-dependent manner.
