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Investigation of EEG changes during exposure to extremely low-frequency magnetic field to conduct brain signals

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Abstract

There are evidences that confirm the effect of magnetic fields (MFs) on brain signals and some psychological disorders such as headache, migraine and depression. The aim of the present study was to investigate changes in EEG power spectrum due to localized exposure in different parts of the brain by extremely low-frequency magnetic fields (ELF-MFs) to extract some protocols for treatment of some psychological disorders. In addition, regular effects were investigated by increasing intensity of ELF-MF. Therefore, EEG relative power spectrum was evaluated at T4, T3, F3, F4, and Cz points, when all the points were exposed to MFs with 45, 17, 10, 5, and 3 Hz frequencies, separately. Intensity of MF was 0, 100, 240, or 360 μT in four sessions. Significant changes were observed in different EEG bands caused by locally exposing to ELF-MF in different points of brain (P < 0.05). Some exposure to MFs decreased alpha band of frontal and central areas in closed-eyes state. Based on the findings in this study, some protocols can be designed using a combination of various MFs exposures to conduct the brain signals that is necessary to evaluate clinically.

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Acknowledgments

The authors would like to thank all subjects for kindly participating in our study and special thanks to S. A Sabbagh for editing this paper.

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Authors and Affiliations

  1. Biophysics-Biochemistry Department, School of Medicine, Rafsanjan University of Medical Sciences (RUMS), Rafsanjan, Iran

    S. A. Shafiei

  2. Department of Medical Physics, Tarbiat Modares University, Tehran, Iran

    S. M. Firoozabadi

  3. Department of Psychology, Tarbiat Modares University, Tehran, Iran

    K. Rasoulzadeh Tabatabaie

  4. Iranian Center of Neurological Research, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran

    M. Ghabaee

Authors
  1. S. A. Shafiei
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  2. S. M. Firoozabadi
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  3. K. Rasoulzadeh Tabatabaie
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  4. M. Ghabaee
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Corresponding author

Correspondence to S. M. Firoozabadi.

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Shafiei, S.A., Firoozabadi, S.M., Tabatabaie, K.R. et al. Investigation of EEG changes during exposure to extremely low-frequency magnetic field to conduct brain signals. Neurol Sci 35, 1715–1721 (2014). https://doi.org/10.1007/s10072-014-1819-0

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  • DOI: https://doi.org/10.1007/s10072-014-1819-0

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