NONLINEAR MODEL OF THE ORIGIN OF ENDOGENOUS ALTERNATING ELECTROMAGNETIC FIELDS AND SELFREGULATION OF METABOLIC PROCESSES IN BIOSYSTEMS L.S. Brizhik, A.A. Eremko Bogolyubov Institute for Theoretical Physics, Scientific Research Centre of Quantum Medicine "Vidhuk", Metrologichna Str., 14-b, 03143 Kyiv, Ukraine Abstract It is shown that electrosolitons which provide charge transport in biological systems, e.g., in respiratory processes, create the alternating electromagnetic field of characteristic frequency. This frequency is determined by soliton velocity and is in the microwave interval. The long-range interaction of solitons via this radiation is shown to result in the synchronization of their motion. This effect provides the selfregulation of metabolic processes in an organism. In addition, such regulation can be stimulated by external radiation of the corresponding frequency. This can constitute one of the mechanisms of microwave resonant therapy. Key words: electromagnetic radiation,selfregulation,charge transport, soliton, microwave resonant therapy Abbreviated title:Selfregulation and bioelectromagnetism Introduction The importance of electromagnetic fields (EMFs) in biological systems is widely recognised and some significant results have been achieved recently in investigation of bioelectromagnetic phenomena. Still, the origin of such fields in the living matter is an open problem, and serious efforts are oriented towards exploring the mechanisms of the influence of external EMFs on biosystems (1). It is known that metabolic processes are accompanied by charge separation and charge transport, including transport of electrons, protons and ions, hence, it is quite natural that biological objects create