Bioelectrodynamics is a branch of medical physics and bioelectromagnetism which deals with rapidly changing electric and magnetic fields in biological systems, i.e. high frequency endogenous electromagnetic phenomena in living cells.
Unlike the events studied by the electrophysiology, the generating mechanism of bioelectrodynamic phenomenon is not connected with currents of ions and its frequency is typically much higher.
Examples include vibrations of electrically polar intracellular structures and non-thermal emission of photons as a result of metabolic activity.
Plenty of theoretical work was published on theories and hypotheses describing generation of electromagnetic field by living cells in very broad frequency range.
[5] Recent theoretical considerations predict generation of radio frequency electromagnetic field in cells as a result of vibrations of electrically polar intracellular structures, e. g., microtubules.