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Влияние широкополосного импульсно-модулированного ЭМП низкой интенсивности на общую возбудимость ЦНС

Влияние широкополосного импульсно-модулированного ЭМП низкой интенсивности на общую возбудимость ЦНС

Abstract

In experiments with male hybrid mice (CBAxC<sub>57</sub>BL<sub>6</sub>)F<sub>1</sub> the influence of monoand polyfrequency pulse-modulated electromagnetic field (3-1 Hz, 50 ms) on the whole excitability of the central nervous system (CNS) was studied by the method of ethanol narcotic sleep. The dependence of the CNS response on the power flux density in the pulse under the sum amplitudes from 250 until 2000 µW/cm<sup>2</sup> the mean power flux density was varied from 12 up to 300 µW/cm<sup>2</sup> and the role of single monofrequency in the whole effect of block. The dependence of the variation in the CNS excitability on the carrier wavelength under wideband polyfrequency radiation within three ranges (1-2, 3-4 and 6-8 GHz) in the condition of isodose distribution of the absorbed energy in structures of brain surface. Statistically significant decrease in the CNS excitability was observed in the nearest period after action of low intensity polyfrequency electromagnetic radiation. It was concluded that this phenomenon might be important in regulatory-hygienic attitude. However, the dependence of the microwave effect on the number of carrier wavelengths, the frequency range and the pulse amplitude is characterized by a complex pattern and the significant change in the excitability arises only under definite combinations of microwave physical parameters.

В опытах на самцах гибридных мышей (СВАхС<sub>57</sub>ВL<sub>6</sub>)F<sub>1</sub> с помощью метода этанолового наркотического сна изучали влияние монои поличастотного электромагнитного поля в диапазоне 4,17-7,86 ГГц, модулированного импульсами с частотой посылок 3-1 Гц (длительность импульса 50 мс), на общую возбудимость ЦНС. Исследовали зависимость реакции ЦНС от суммарной амплитуды при значениях от 250 до 2000 мкВт/см<sup>2</sup> (средний поток падающей энергии ППЭ от 12 до 300 мкВт/см<sup>2</sup>) и роль отдельных моночастот в суммарном эффекте блока генераторов. Зависимость изменений возбудимости ЦНС от длины волны изучали при воздействии широкополосного многочастотного излучения по трем диапазонам (1-2, 3-4 и 6-8 ГГц) в условиях изодозного поглощения энергии поля в поверхностных структурах мозга. Выявлено статистически значимое снижение возбудимости ЦНС в ближайший период последействия низкоинтенсивных многочастотных ЭМ-полей, сделан вывод о значимости этого фактора в нормативно-гигиеническом отношении. Однако зависимость эффекта микроволн от количества несущих, от частотных диапазонов и амплитуды импульсов носит сложный характер, и значимые изменения возбудимости возникают лишь при определенных сочетаниях физических параметров поля.

Keywords

электромагнитное излучение, импульсная модуляция, низкая интенсивность, возбудимость ЦНС, этаноловый тест

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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