Effects of microwaves emitted by cellular phones on human slow brain potentials

Freude, Gabriele; Ullsperger, Peter; Eggert, Siegfried; Ruppe, Ingeburg

doi:10.1002/(sici)1521-186x(1998)19:6<384::aid-bem6>3.0.co;2-y

Cited by 131 publications

(68 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Several studies have investigated the interaction between mobile phones and brain functions in humans including their effect on hearing [9][10][11][12][13][14][15][16][17]. Some of the similar recent studies have been highlighted below:…”

Section: Discussionmentioning

confidence: 80%

Auditory Brainstem Responses and EMFs Generated by Mobile Phones

Khullar

Sood

2013

Indian J Otolaryngol Head Neck Surg

View full text Add to dashboard Cite

There has been a manifold increase in the number of mobile phone users throughout the world with the current number of users exceeding 2 billion. However this advancement in technology like many others is accompanied by a progressive increase in the frequency and intensity of electromagnetic waves without consideration of the health consequences. The aim of our study was to advance our understanding of the potential adverse effects of GSM mobile phones on auditory brainstem responses (ABRs). 60 subjects were selected for the study and divided into three groups of 20 each based on their usage of mobile phones. Their ABRs were recorded and analysed for latency of waves I-V as well as interpeak latencies I-III, I-V and III-V (in ms). Results revealed no significant difference in the ABR parameters between group A (control group) and group B (subjects using mobile phones for maximum 30 min/day for 5 years). However the latency of waves was significantly prolonged in group C (subjects using mobile phones for 10 years for a maximum of 30 min/day) as compared to the control group. Based on our findings we concluded that long term exposure to mobile phones may affect conduction in the peripheral portion of the auditory pathway. However more research needs to be done to study the long term effects of mobile phones particularly of newer technologies like smart phones and 3G.

show abstract

Section: Discussionmentioning

confidence: 80%

Auditory Brainstem Responses and EMFs Generated by Mobile Phones

Khullar

Sood

2013

Indian J Otolaryngol Head Neck Surg

View full text Add to dashboard Cite

show abstract

“…Some of the studies indicated that EMF caused a reduction in the voltage of slow potentials. However, a more detailed analysis of the results and their verification in further experiments did not confirm the earlier observations [12][13][14]. Considering the limitations of the EEG method, in our current work we decided to use determinations of P300 wave to assess EMF effect on auditory cortex ERPs.…”

Section: Discussionmentioning

confidence: 99%

Effects of GSM signals during exposure to event related potentials (ERPs)

Bąk¹,

Dudarewicz²,

Zmyślony³

et al. 2010

International Journal of Occupational Medicine and Environmental Health

View full text Add to dashboard Cite

Objectives: The primary aim of this work was to assess the effect of electromagnetic field (EMF) from the GSM mobile phone system on human brain function. The assessment was based on the assay of event related potentials (ERPs). Material and Methods:The study group consisted of 15 volunteers, including 7 men and 8 women. The test protocol comprised determination of P300 wave in each volunteer during exposure to the EMF. To eliminate possible effects of the applied test procedure on the final result, the test was repeated without EMF exposure. P300 latency, amplitude, and latency of the N1, N2, P2 waves were analysed. Results: The statistical analysis revealed an effect of EMF on P300 amplitude. In the experiment with EMF exposure, lower P300 amplitudes were observed only at the time in which the volunteers were exposed to EMF; when the exposure was discontinued, the values of the amplitude were the same as those observed before EMF application. No such change was observed when the experiment was repeated with sham exposure, which may be considered as an indirect proof that lower P300 amplitude values were due to EMF exposure. No statistically significant changes were noted in the latencies of the N1, N2, P2 waves that precede the P300 wave, nor in the latency of the P300 itself. Conclusions: The results suggest that exposure to GSM EMF exerts some effects on CNS, including effects on long latency ERPs.

show abstract

“…As the induced brain activity in higher frequency bands has been proposed to be a correlate of coherent high frequency neuronal activity, PEMF exposure may provide a means to systematically alter the pattern fluctuations in neural mass activity. Freude et al [1998] found a significant effect on slow brain potentials at central and temporo-parietooccipital regions during exposure to cell phone emissions. The influence of EMF emitted by a cellular phone positioned at the left ear, on preparatory slow brain potentials (SP) was studied in two different tasks: in the first, healthy male human subjects had to perform simple self-paced finger movements to elicit a Bereitschaftspotential (BP); in the second, they performed a complex and cognitive demanding visual monitoring task (VMT).…”

Section: Electroencephalography and Evoked Responsesmentioning

confidence: 98%

Microwave effects on the nervous system

D'Andrea

Chou

Johnston³

et al. 2003

Bioelectromagnetics

116

View full text Add to dashboard Cite

Studies have evaluated the electroencephalography (EEG) of humans and laboratory animals during and after Radiofrequency (RF) exposures. Effects of RF exposure on the blood-brain barrier (BBB) have been generally accepted for exposures that are thermalizing. Low level exposures that report alterations of the BBB remain controversial. Exposure to high levels of RF energy can damage the structure and function of the nervous system. Much research has focused on the neurochemistry of the brain and the reported effects of RF exposure. Research with isolated brain tissue has provided new results that do not seem to rely on thermal mechanisms. Studies of individuals who are reported to be sensitive to electric and magnetic fields are discussed. In this review of the literature, it is difficult to draw conclusions concerning hazards to human health. The many exposure parameters such as frequency, orientation, modulation, power density, and duration of exposure make direct comparison of many experiments difficult. At high exposure power densities, thermal effects are prevalent and can lead to adverse consequences. At lower levels of exposure biological effects may still occur but thermal mechanisms are not ruled out. It is concluded that the diverse methods and experimental designs as well as lack of replication of many seemingly important studies prevents formation of definite conclusions concerning hazardous nervous system health effects from RF exposure. The only firm conclusion that may be drawn is the potential for hazardous thermal consequences of high power RF exposure.

show abstract

Effects of microwaves emitted by cellular phones on human slow brain potentials

Cited by 131 publications

References 8 publications

Auditory Brainstem Responses and EMFs Generated by Mobile Phones

Auditory Brainstem Responses and EMFs Generated by Mobile Phones

Effects of GSM signals during exposure to event related potentials (ERPs)

Microwave effects on the nervous system

Contact Info

Product

Resources

About