Abstract
In this study, we monitored electromagnetic waves generated by human activity and investigated a method for individual identification by looking at the bioelectric potential of a rubber tree. Four subjects were asked to walk in place at a distance of 60 cm from a rubber tree while we measured variations in the bioelectric potential of the tree as produced by the stepping. The results confirmed that electromagnetic waves generated by a human subject walking in place produce a measurable response in the bioelectric potential of a plant. It was also found that this variation in bioelectric potential varies in synchrony with each subject's walking pace. The spectral envelope of the observed signal was approximated using a straight line and the distribution of the coefficients of this line was plotted. Even for a simple straight-line approximation, we demonstrated that this coefficient distribution varies considerably among individual subjects.
| Original language | English |
|---|---|
| Pages (from-to) | 1768-1773 |
| Number of pages | 6 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 46 |
| Issue number | 4 A |
| DOIs | |
| State | Published - 2007/04/05 |
Keywords
- Electric field
- Individual identification
- Plant bioelectric potential
- Rubber tree
- Straight-line approximation
- Walking
ASJC Scopus subject areas
- General Engineering
- General Physics and Astronomy