Study On Electromagnetism Compatibility Of Organism

Experiments on biological electromagnetism show that certain electric and magnetic field can produce some effects on organism. While organism itself is a complex electromagnetic compatibility system, it can work independently with other organisms and sources of electric and magnetic fields without disturbance. This compatible capability is a result of natural evolution in a long period. When this state of electromagnetic compatibility is destroyed for the change of external conditions, a series of life phenomena on the organism will be influenced in different levels.This thesis introduces a method to calculate the strength of electric and magnetic field of organisms under electromagnetism radiation, studies the impacts of magnetic stimulation of different strengths and frequencies on big rats. Besides, it also discusses the reasons of cardiogram changes under magnetic stimulation according to the results of experiments as well as fundamental theories on cardiogram production. Several big rats are chosen to get impulse magnetic stimulations of different frequencies and strengths in order to inspect cardiogram signals before, during and after stimulation and compare the similarities and differences in different stages as well as the similarities and differences under stimulations of different strengths and frequencies. The results show that when the rat is under stimulation, in the instance of impulse, its cardiogram breadth is several times of that without stimulation, and cardiogram breadth is increased with the increase of loop current breadth; after stimulation, the remaining impacts of stimulation on cardiogram are enhanced with the decrease of stimulation frequency. Calculation shows that as the loop current breadth with high values may produce large magnetic induction strength in the heart and its stimulation on heart nerve may be enhanced, the active and passive transportation of Na+, K+ has been disturbed which results in the change of cardiogram breadth. Besides, according to the analysis on the impacts of low frequency electric and magnetic field on the cell films of organisms, the active and passive transportation of Ca2+ has been enhanced gradually with the decrease of frequency, and influences the excitement of the cell, therefore, the impact of stimulation on cardiogram is enhanced with the decrease of stimulation frequency.Excess exposure to magnetic stimulation will lead to the breadth of cardiac muscle in a high level in frequent times, thus resulting in the fatigue of cardiac muscle. Magnetic stimulation with low frequencies will lead to the turbulence of heart frequency which will produce serious results. Therefore, in daily life, one should avoid being exposed to excess magnetic stimulation. However, magnetic stimulations with appropriate strengths and frequencies play an active role in renewing cardiac muscle functions as well as curing some disease in cardiac muscle.