caa a22 4500 463194985 CHVBK 20180406164920.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10669-007-9069-9 doi (NATIONALLICENCE)springer-10.1007/s10669-007-9069-9 Individual changes in human EEG caused by 450MHz microwave modulated at 40 and 70Hz [Elektronische Daten] [Maie Bachmann, Ruth Tomson, Jaan Kalda, Maksim Säkki, Jaanus Lass, Viiu Tuulik, Hiie Hinrikus] This study was aimed to investigate the changes in the human electroencephalographic (EEG) signal caused by modulated low-level microwaves. The 450MHz microwave exposure modulated at 40Hz and 70Hz frequencies was applied to a group of 15volunteers. The field power density at the scalp was 0.16mW/cm2. Ten cycles of the exposure (1min on and 1min off) at both modulation frequencies were applied. Analysis of the EEG signal was performed using three different methods: nonlinear method of scaling analysis for length distribution of low variability periods (LDLVP), relative changes in EEG energy (S-parameter) and beta ratio (H-parameter). The analysis revealed significant changes caused by microwave for the whole group (H-parameter method). The exposure caused increase of the EEG beta power (S-parameter method). Statistically significant changes in EEG were detected for four subjects (26.7%) at 40Hz modulation frequency (LDLVP method). Springer Science+Business Media, LLC, 2007 EMF effects nationallicence Time variability nationallicence Scaling analysis nationallicence Quantitative EEG nationallicence Spectral analysis nationallicence Bachmann Maie Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut Tomson Ruth Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut Kalda Jaan Institute of Cybernetics, Tallinn University of Technology, 21 Academy Rd, 12618, Tallinn, Estonia aut Säkki Maksim Institute of Cybernetics, Tallinn University of Technology, 21 Academy Rd, 12618, Tallinn, Estonia aut Lass Jaanus Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut Tuulik Viiu Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut Hinrikus Hiie Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut The Environmentalist Springer US; http://www.springer-ny.com 27/4(2007-12-01), 511-517 0251-1088 27:4<511 2007 27 10669 https://doi.org/10.1007/s10669-007-9069-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10669-007-9069-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bachmann Maie Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut NATIONALLICENCE 700 1- Tomson Ruth Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut NATIONALLICENCE 700 1- Kalda Jaan Institute of Cybernetics, Tallinn University of Technology, 21 Academy Rd, 12618, Tallinn, Estonia aut NATIONALLICENCE 700 1- Säkki Maksim Institute of Cybernetics, Tallinn University of Technology, 21 Academy Rd, 12618, Tallinn, Estonia aut NATIONALLICENCE 700 1- Lass Jaanus Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut NATIONALLICENCE 700 1- Tuulik Viiu Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut NATIONALLICENCE 700 1- Hinrikus Hiie Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086, Tallinn, Estonia aut NATIONALLICENCE 773 0- The Environmentalist Springer US; http://www.springer-ny.com 27/4(2007-12-01), 511-517 0251-1088 27:4<511 2007 27 10669 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer