ELF Electric and Magnetic Field Effects: The Patterns and the Problems

Persinger, Michael A.

doi:10.1007/978-1-4684-9004-6_10

Cited by 12 publications

(5 citation statements)

References 29 publications

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“…Usually one assumes that induced effects from applied magnetic fields occur homogeneously through tissue, including extracelluar space. As hypothesized by Persinger (1974) if some components (such as the polyanionic nets of the chondroitin sulphates) are very conductive, even weak current induction would affect those components because they would behave as 'electric sinks' if the applied magnetic fields are resonant with the natural frequency and mass of the molecule (Persinger 2006). Obviously the specific parameters for inductance and reluctance would be critical.…”

Section: Discussionmentioning

confidence: 97%

Altered blood chemistry and hippocampal histomorphology in adult rats following prenatal exposure to physiologically-patterned, weak (50–500 nanoTesla range) magnetic fields

St-Pierre

Mazzuchin

Persinger

2008

International Journal of Radiation Biology

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Section: Discussionmentioning

confidence: 97%

Altered blood chemistry and hippocampal histomorphology in adult rats following prenatal exposure to physiologically-patterned, weak (50–500 nanoTesla range) magnetic fields

St-Pierre

Mazzuchin

Persinger

2008

International Journal of Radiation Biology

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“…The signal propagation is not necessarily reciprocal during magnetic loop TTE communications, especially when the apparent earth conductivity is high [ Persinger , 1974; Yan et al , 2013]. For electrode-based TTE communication, however, Hill and Wait [1973] and Hill [1973] obtained the same forms of the underground electric field and surface electric field due to a surface cable and a buried cable, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The understanding of the electric field distribution within the overburden is therefore important for the design and application of electrode-based TTE systems. Over the past few decades, researchers have investigated the electromagnetic fields within the earth due to an ELF or ULF source on the surface [ Wait , 1961; Wait and Spies , 1971; Persinger , 1974; Geyer et al , 1974; Gibson , 2003]. The static electric field was obtained for a line source carrying DC current [ Geyer et al , 1974; Yan and Sunderman , 2015].…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and measurement of electric fields of electrode-based through-the-earth (TTE) communication

et al. 2017

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There are two types of through‐the‐earth (TTE) wireless communication in the mining industry: magnetic loop TTE and electrode‐based (or linear) TTE. While the magnetic loop systems send signal through magnetic fields, the transmitter of an electrode‐based TTE system sends signal directly through the mine overburden by driving an extremely low frequency (ELF) or ultralow frequency (ULF) AC current into the earth. The receiver at the other end (underground or surface) detects the resultant current and receives it as a voltage. A wireless communication link between surface and underground is then established. For electrode‐based TTE communications, the signal is transmitted through the established electric field and is received as a voltage detected at the receiver. It is important to understand the electric field distribution within the mine overburden for the purpose of designing and improving the performance of the electrode‐based TTE systems. In this paper, a complete explicit solution for all three electric field components for the electrode‐based TTE communication was developed. An experiment was conducted using a prototype electrode‐based TTE system developed by National Institute for Occupational Safety and Health. The mathematical model was then compared and validated with test data. A reasonable agreement was found between them.

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“…Vagotonic and sympathotonie dominance are known to be correlated with alpha frequency range (Gellhorn and Loofbourrow, 1963). The range of dominant biofrequency spectra would theoretically influence the probability of resonance ir~teraction with applied fields (Persinger, 1974).…”

Section: Discussionmentioning

confidence: 99%

Human reaction time variability changes from low intensity 3-Hz and 10-Hz electric fields: Interactions with stimulus pattern, sex and field intensity

Persinger

Lafreniere²,

Mainprize³

1975

Int J Biometeorol

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ABSTRACT.-Eighty simple reaction times (RT) to the onset of a light stimulus during 40 rain of 3 successive 10-rain exposures to 3-Hz and 10-Hz electric field were measured for each of 70 human male and female subjects exposed to either 3 0 V/m, 0.3 V/m or sham field conditions. The electric fields were applied horizontally across the upper half of the subject who was seated in a Faraday cage during the experiment. Two methods of presenting the RT-stimulus (light onset) were used which incorporated rest or no rest periods No significant differences in mean RT were noted between sexes, intensities or frequency changes. Significant sex, intensity and frequency interactions were found in the amount of RT variability as measured by the RT standard deviation of 20 trial blocks. However, the magnitude of the effects was quite small and may be of little practical importance.

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ELF Electric and Magnetic Field Effects: The Patterns and the Problems

Cited by 12 publications

References 29 publications

Altered blood chemistry and hippocampal histomorphology in adult rats following prenatal exposure to physiologically-patterned, weak (50–500 nanoTesla range) magnetic fields

Altered blood chemistry and hippocampal histomorphology in adult rats following prenatal exposure to physiologically-patterned, weak (50–500 nanoTesla range) magnetic fields

Mathematical modeling and measurement of electric fields of electrode-based through-the-earth (TTE) communication

Human reaction time variability changes from low intensity 3-Hz and 10-Hz electric fields: Interactions with stimulus pattern, sex and field intensity

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