Analysis of body hair movement in ELF electric field exposure - For mechanism of seasonal change in perception threshold

For the study of biological effects of ELF electric field, a theoretical and experimental study was conducted on the body hair movement in electric field exposure. First, the dielectric constant of body hair was measured, and its dependence on relative humidity was demonstrated. Then, the electric f...

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Bibliographic Details
Published in2014 International Symposium on Electromagnetic Compatibility, Tokyo pp. 162 - 165
Main Authors Shimizu, Hisae O., Shimizu, Koichi
Format Conference Proceeding
LanguageEnglish
Published The Institute of Electronics, Information and Communication Engineer 01.05.2014
Subjects
detection threshold
Dielectric constant
dielectric constant of hair
Electric fields
electric force
ELF electric field
Force
Geophysical measurement techniques
Ground penetrating radar
Hair
hair movement
human effect
Humidity
safety standard
somatosensory stimulation
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Summary:For the study of biological effects of ELF electric field, a theoretical and experimental study was conducted on the body hair movement in electric field exposure. First, the dielectric constant of body hair was measured, and its dependence on relative humidity was demonstrated. Then, the electric force and the movement of hair were formulated. After the reasonability of equations was verified in experiments, the property of the electric force was examined. The dependence of the electric force on the dielectric constant of hair has been proved through the analysis of hair movement. The perception threshold in electric field exposure was measured. It became significantly low when the relative humidity increased from 50% to 90%. With these results, we could complete the cause-result chain to explain the seasonal variation of the detection threshold of ELF electric field.