Individual changes in human EEG caused by 450 MHz microwave modulated at 40 and 70 Hz

Maie Bachmann (), Ruth Tomson, Jaan Kalda, Maksim Säkki, Jaanus Lass, Viiu Tuulik and Hiie Hinrikus
Additional contact information
Maie Bachmann: Technomedicum of Tallinn University of Technology
Ruth Tomson: Technomedicum of Tallinn University of Technology
Jaan Kalda: Tallinn University of Technology
Maksim Säkki: Tallinn University of Technology
Jaanus Lass: Technomedicum of Tallinn University of Technology
Viiu Tuulik: Technomedicum of Tallinn University of Technology
Hiie Hinrikus: Technomedicum of Tallinn University of Technology

Environment Systems and Decisions, 2007, vol. 27, issue 4, 511-517

Abstract: Abstract This study was aimed to investigate the changes in the human electroencephalographic (EEG) signal caused by modulated low-level microwaves. The 450 MHz microwave exposure modulated at 40 Hz and 70 Hz frequencies was applied to a group of 15 volunteers. The field power density at the scalp was 0.16 mW/cm2. Ten cycles of the exposure (1 min on and 1 min 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 40 Hz modulation frequency (LDLVP method).

Keywords: EMF effects; Time variability; Scaling analysis; Quantitative EEG; Spectral analysis (search for similar items in EconPapers)
Date: 2007
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://link.springer.com/10.1007/s10669-007-9069-9 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:envsyd:v:27:y:2007:i:4:d:10.1007_s10669-007-9069-9

Ordering information: This journal article can be ordered from
https://www.springer.com/journal/10669

DOI: 10.1007/s10669-007-9069-9

Access Statistics for this article

More articles in Environment Systems and Decisions from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().