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Visualization of electric fields around a biological body

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3 Author(s)
Shimizu, K. ; Res. Inst. of Appl. Electr., Hokkaido Univ., Sapporo, Japan ; Endo, H. ; Matsumoto, G.

A system was developed that can visualize the spatial distribution of the ELF (extremely low frequency) electric field around an object with a complex shape such as a biological body. A mechanical X-Y scanner controlled by a microcomputer moves an optical sensor, automatically scanning the space around the object. The measured data are processed and the field distribution is represented in a color distribution pattern. Using an object with a simple shape such as a cylinder, the accuracy of the measurement was confirmed by comparison to a numerical calculation. The field distributions around experimental animals (a rat and a cat) were measured and it was shown that a conductor model can be used instead of a living body in the ELF range. The field distribution around a human model was measured in various postures, showing reasonable agreement with measurements for a real human body standing under transmission lines.

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Biomedical Engineering, IEEE Transactions on  (Volume:35 ,  Issue: 5 )