Effects of an electromagnetic field on intracellular calcium oscillations in a cell with external noise

Intracellular calcium ion concentration oscillation in a cell subjected to external noise and irradiated by an electromagnetic field is considered.The effects of the intensity E 0,the polar angle θ and the frequency ω of the external electric field on steady-state probability distribution and the mean Ca 2+ concentration,respectively,are investigated by a numerical calculation method.The results indicate that(i) variation of ω cannot affect the intracellular calcium oscillation;(ii) the steady-state probability distribution presents a meaningful modification due to the variations of E 0 and θ,while variation of θ does not affect the steady-state probability distribution under the condition of a small E 0,and E 0 cannot affect the steady-state probability distribution either when θ = π/2;(iii) the mean Ca 2+ concentration increases as E 0 increases when θ < π/2 and,as θ increases,it first increases and then decreases.However,it does not vary with E 0 increasing when θ = π/2,but it increases with θ increasing when E 0 is small.

Effects of an electromagnetic field on intracellular calcium oscillations in a cell with external noise

Intracellular calcium ion concentration oscillation in a cell subjected to external noise and irradiated by an electromagnetic field is considered. The effects of the intensity E₀, the polar angle θ and the frequency omega of the external electric field on steady-state probability distribution and the mean Ca²⁺ concentration, respectively, are investigated by a numerical calculation method. The results indicate that (i) variation of ω cannot affect the intracellular calcium oscillation; (ii) the steady-state probability distribution presents a meaningful modification due to the variations of E₀ and θ, while variation of θ does not affect the steady-state probability distribution under the condition of a small E₀, and E₀ cannot affect the steady-state probability distribution either when θ = π/2; (iii) the mean Ca²⁺ concentration increases as E₀ increases when θ < π/2 and, as θ increases, it first increases and then decreases. However, it does not vary with E₀ increasing when θ = π/2, but it increases with θ increasing when E₀ is small.