EFFECTS OF 45-HZ MAGNETIC-FIELDS ON CORTICAL EEG SPECTRUM IN RATS

Citation
E. Lyskov et al., EFFECTS OF 45-HZ MAGNETIC-FIELDS ON CORTICAL EEG SPECTRUM IN RATS, Electro- and magnetobiology, 12(2), 1993, pp. 179-185
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Biophysics
Journal title
ISSN journal
1061-9526
Volume
12
Issue
2
Year of publication
1993
Pages
179 - 185
Database
ISI
SICI code
1061-9526(1993)12:2<179:EO4MOC>2.0.ZU;2-7
Abstract
The effects of intermittent (1 sec on/1 sec off) 45-Hz magnetic fields on quantitative electroencephalogram (EEG) were studied using 12 fema le rats. The animals were exposed for 24 hr to three different conditi ons: 1000 A/m (1.26 mT), 100 A/m (126 mu T), and sham exposure. The co rtical EEG was recorded before and after each exposure, and the power spectrum of the EEG was calculated. Exposure at 100 A/m produced stati stically significant decreases in the delta (1-4 Hz) and theta (4-8 Hz ) bands and increased activities in the beta (12-20 Hz) and 30-60 Hz b ands. Smaller changes were seen at 1000 A/m than at 100 A/m. The chang es seen were more pronounced 15 min after the end of exposure than imm ediately after it. At 30 min after exposure most differences from the preexposure values had disappeared.