Human cognitive performance in a 3 mT power-line frequency magnetic field

Corbacio, Michael; Brown, Samantha; Dubois, S.; Goulet, Denis; Prato, Frank S.; Thomas, Alex; Legros, Alexandre

doi:10.1002/bem.20676

Cited by 17 publications

(13 citation statements)

References 76 publications

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“…Some references [1]; [25]; [29]; [36]; [42]; [62]; [87]; [94]; [101]; [102] discussed the problems of the irreproducible bioeffects of weak magnetic fields. Some references [1]; [36]; [62]; [101]; [102] explained the reasons in different view points.…”

Section: Discussionmentioning

confidence: 99%

“…An increased risk of amyotrophic lateral sclerosis (ALS) in workers occupationally exposed to ELF-MFs were observed in Huss, et al [21]. Kleijn, et al [22]; Zhang, et al [23]; Schüz, et al [24]; Tang, et al [25]; Fixler, et al [26]; Wang, et al [27]; Prato, et al [28]; Corbacio, et al [29]; Vanderstraeten and Gillis [30]; Bowman, et al [31]; Prato, et al [32]; Burda, et al [33]; Burger, et al [34] reported the other biological effects of ELF-MFs (0 to 300 Hz) fields. Smith, et al [58]; Lednev [59]; Blanchard and Blackman [60]; Binhi [61] proposed the mechanisms of biological effects of ELF-MFs which are cyclotron resonance theory and it's new interpretation,the ion parametric resonance model and an interference of ions bound within proteins.…”

Section: The Hyperfine Coupling Mechanism Of Biological Effects On Elmentioning

confidence: 99%

“…For example, more and more people have been attracted by the small increases in childhood leukemia for children living near power lines and possible increases in brain tumors for heavy use of cell phones [1]. The biological effects of extremely low-frequency (0 to 300 Hz) magnetic fields (ELF-MFs) are presented [21][22][23][24][25][26][27][28][29][30][31][32][33][34]. The biological effects of intermediate frequency (300 Hz to 100 kHz) magnetic fields(IMF-MFs)are discussed [35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

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The Hyperfine Coupling Radical Pair Mechanism of Biological Effects on Weak Magnetic Fields

Ouyang¹

2019

Asian Engineering Review

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More recent concerns have been raised about the biological effects of all different weak magnetic fields (MFs) with the development of electric device era and information era. The biological effects due to weak MFs just like a hypomagnetic field (HMF) or near-null magnetic field is a very important subject for aerospace traveling and space station living. A large number of studies on the biological effects of other weak MFs have been carried out. The biological effects of different weak MFs can be negative or positive. Many mechanisms to explain the bioeffects of weak MFs have been given. Are there possible common mechanisms of the different biological effects in different weak MFs ? It's unbelievable and sound impossible at first sight that different bioeffects of different weak MFs have common mechanisms. But possible common mechanisms can exist. In this study, the author proposes the relations between the singlet yield of the radical pair and the weak MFs are the possible common mechanisms. Giving one possible common mechanism of bioeffects of all different weak MFs including impulsed ones is the first to the author's known. Here, the weak MFs are ones that cannot produce thermal bioeffects not only limited below 1mT.

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Section: Discussionmentioning

confidence: 99%

Section: The Hyperfine Coupling Mechanism Of Biological Effects On Elmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Hyperfine Coupling Radical Pair Mechanism of Biological Effects on Weak Magnetic Fields

Ouyang¹

2019

Asian Engineering Review

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“…According to the most part of the studies, ELF-MFs are safe and well tolerated (Di Lazzaro et al, 2013). However, previous papers have showed deterioration in memory and learning processes after ELF-MFs exposure both in animals (Jadidi et al, 2007) and in humans (Podd et al, 2002;Corbacio et al, 2011). Instead, other studies have reported, after chronic ELF-MFs exposure, a positive effect in social recognition memory (Varró et al, 2009) and spatial learning (Liu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Extremely Low Frequency Magnetic Fields Do Not Affect LTP-Like Plasticity in Healthy Humans

Capone

Pellegrino

Motolese

et al. 2020

Front. Hum. Neurosci.

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Introduction: Several studies explored the biological effects of extremely low-frequency magnetic fields (ELF-MFs) in vitro, reporting the induction of functional changes in neuronal activity. In particular, ELF-MFs can influence synaptic plasticity both in vitro and in animal models but some studies reported an increase in long-term potentiation (LTP) whereas others suggested its reduction. However, no specific study has investigated such effect on humans. Aims: To evaluate whether ELF-MFs affect the propensity of the human cortex to undergo LTP-like plasticity. Methods: We designed a randomized, single-blind, sham-controlled, cross-over study on 10 healthy subjects. Cortical plasticity was induced by intermittent theta burst stimulation (iTBS) before and after 45-min ELF-MFs (75 Hz; 1.8 mT) or sham exposure and was estimated by measuring the changes of motor evoked potentials (MEP) amplitude before and after each iTBS. Results: No adverse events were reported. No significant effects of ELF-MFs on cortical plasticity were found. Conclusion: Whole-brain exposure to ELF-MFs (75 Hz; 1.8 mT) is safe and does not seem to significantly affect LTP-like plasticity in human motor cortex.

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“…These studies have highlighted the role of neuronal morphology and orientation were critical in understanding the interaction with electric field, but also that membrane depolarization far below the firing threshold can influence the activity of neuronal networks. Second, among the reported effects in humans, let us mention the modulation of pain threshold (Ghione et al, 2005), effects on resting tremor (Legros and Beuter, 2005), modulations in functional brain activity as measured by BOLD (Legros et al, 2011), interference with learning in a short-term memory test (Corbacio et al, 2011). The most established interaction mechanism of MF exposure consists in induced currents, resulting from Faraday's law of induction, stating that a time-varying MF induces a time-varying electric field.…”

Section: Introductionmentioning

confidence: 99%

Neural mass modeling of power-line magnetic fields effects on brain activity

Modolo¹,

Thomas²,

Legros³

2013

Front. Comput. Neurosci.

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Neural mass models are an appropriate framework to study brain activity, combining a high degree of biological realism while being mathematically tractable. These models have been used, with a certain success, to simulate brain electric (electroencephalography, EEG) and metabolic (functional magnetic resonance imaging, fMRI) activity. However, concrete applications of neural mass models have remained limited to date. Motivated by experimental results obtained in humans, we propose in this paper a neural mass model designed to study the interaction between power-line magnetic fields (MFs) (60 Hz in North America) and brain activity. The model includes pyramidal cells; dendrite-projecting, slow GABAergic neurons; soma-projecting, fast GABAergic neurons; and glutamatergic interneurons. A simple phenomenological model of interaction between the induced electric field and neuron membranes is also considered, along with a model of post-synaptic calcium concentration and associated changes in synaptic weights Simulated EEG signals are produced in a simple protocol, both in the absence and presence of a 60 Hz MF. These results are discussed based on results obtained previously in humans. Notably, results highlight that (1) EEG alpha (8–12 Hz) power can be modulated by weak membrane depolarizations induced by the exposure; (2) the level of input noise has a significant impact on EEG power modulation; and (3) the threshold value in MF flux density resulting in a significant effect on the EEG depends on the type of neuronal populations modulated by the MF exposure. Results obtained from the model shed new light on the effects of power-line MFs on brain activity, and will provide guidance in future human experiments. This may represent a valuable contribution to international regulation agencies setting guidelines on MF values to which the general public and workers can be exposed.

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Human cognitive performance in a 3 mT power-line frequency magnetic field

Cited by 17 publications

References 76 publications

The Hyperfine Coupling Radical Pair Mechanism of Biological Effects on Weak Magnetic Fields

The Hyperfine Coupling Radical Pair Mechanism of Biological Effects on Weak Magnetic Fields

Extremely Low Frequency Magnetic Fields Do Not Affect LTP-Like Plasticity in Healthy Humans

Neural mass modeling of power-line magnetic fields effects on brain activity

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