The search functionality is under construction.
The search functionality is under construction.

Fundamental Analysis on Perception Mechanism of ELF Electric Field

Hisae ODAGIRI, Koichi SHIMIZU, Goro MATSUMOTO

  • Full Text Views

    0

  • Cite this

Summary :

For the study of the biological effects of ELF (Extremely Low Frequency) electric fields, the perception mechanism of ELF electric fields was analyzed. When a human body is exposed to an electric field, the hair on the body surface moves due to the electric force exerted on the hair. In theoretical analysis, it was shown that the force is approximately proportional to the dielectric constant of hair and the spatial gradient of the square of the electric field at the hair. The dielectric constant of hair was measured with different temperatures and humidities of the surrounding air. A technique was developed to estimate the electric force exerted on a hair during the field exposure. After experiments with model hair, the technique was applied to a body hair of a living human being. It was found that the force increased with field strength and relative humidity. The variations of the force agreed well with those expected from the theoretical analysis and the measurement of hair dielectric constants. These results explain the cause of the reported variation in the threshold of biological effects of an electric field. The results will help to establish a practical safety standard for the held exposure.

Publication
IEICE TRANSACTIONS on Communications Vol.E77-B No.6 pp.719-724
Publication Date
1994/06/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Biological Effects of Electromagnetic Fields)
Category

Authors

Keyword