Modelling the living cell-microelectronic antenna combination: role of the causal feedback

The paper addresses a post-information technology topic. Vibrating polar macromolecules present with in the confining membrane and in the interior of biological cells function as emitters of electromagnetic field covering a broad frequency spectrum. Sustained oscillation can be fuelled by intracellular metabolic source. The phenomenon was modelled by Frohlich in the form of rate equation for the oscillator occupation number. Diagrammatic analysis is applied on these equations to reveal the presence of feedback mechanism. The mathematical formulism associated with the diagrams affords quantitative evaluation of the feedback effects. This constitutes an important factor in the characterisation of the cell as a source whose radiation is to be detected by a planar microelectrode chip functioning as a receiving antenna.