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[Some changes in bioelectrical activity of the brain during short regulated exposure to pulsed electrical fields]

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It was shown that short (10 s) exposures of white rats being at rest to impulse (1 ms) electromagnetic fields (170 A/m) at a fixed frequency of pulse sequence in the range of the theta-rhythm do not change the contribution to the electrocorticogram (ECoG) of the harmonic whose frequency corresponds to the frequency of pulse sequence. By contrast, treatments with a frequency-pulse modulation at which the interpulse intervals corresponding to the frequency of the harmonic being studied were not observed throughout the range of exposure but at which their high correlation was provided, assisted in decreasing the contribution of the harmonic to the ECoG spectrum. If the functional state of the central nervous system was changed by drugs leading to the predominance of the short-wavelength activity in the ECoG, both regimes of exposure significantly affected the contribution of the harmonic in the ECoG, whose direction and dynamics depended on the excitability of neurons.

Author:

Pestriaev, V. A.

Year:

2003

Volume:

48

Pages:

733-9--

Keywords:

Animals Brain/*physiology Electrocardiography *Electromagnetic Fields

Comment:

Pestriaev, V A English Abstract Russia Biofizika Biofizika. 2003 Jul-Aug;48(4):733-9.

Address:

Ural State Medical Academy, ul. Repina 3, Ekaterinburg, 620219 Russia.

Book title:

Biofizika

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