Abstract
In this study, a new method is proposed for detecting the effect of a pulsed magnetic field without a loss of temporal information. The strength of exposed magnetic field was 0.1 T. Trains of 10 pulses of the magnetic fields at intervals of 0.05 s were applied at 1 Hz. Physarum polycepharum is an amoeba that moves in search of food, and its trace forms net-shaped patterns. Fractal analysis was performed, and the fractal dimension of the patterns was determined by the box-counting method. The value of the fractal dimension was about 1.7 in both exposed and control groups after 4 hours of exposure. After 8 hours of exposure, the value for the control group was 1.72 and that for the exposed group was 1.77. The results indicate that longer time exposure affects the complexity of the patterns of P. polycepharum.
