title: Linear noise approximation for stochastic oscillations of intracellular calcium.
abstract: A stochastic model of intracellular calcium oscillations is analytically studied. The governing master equation is expanded under the linear noise approximation and a closed prediction for the power spectrum of fluctuations analytically derived. A peak in the obtained power spectrum profile signals the presence of stochastic, noise induced oscillations which extend also outside the region where a deterministic limit cycle is predicted to occur.
authors: Dipartimento di Matematica e Informatica "U. Dini", University of Florence, Viale Morgagni 67/A, 50139 Florence, Italy.
authors: Laura
authors: L
authors: Cantini
authors: Dipartimento di Sistemi e Informatica and INFN, University of Florence, Via S. Marta 3, 50139 Florence, Italy.
authors: Claudia
authors: C
authors: Cianci
authors: Dipartimento di Fisica e Astronomia, University of Florence and INFN, Via Sansone 1, 50019 Sesto Fiorentino, Florence, Italy.
authors: Duccio
authors: D
authors: Fanelli
authors: Dipartimento di Matematica e Informatica "U. Dini", University of Florence, Viale Morgagni 67/A, 50139 Florence, Italy.
authors: Emma
authors: E
authors: Massi
authors: Dipartimento di Matematica e Informatica "U. Dini", University of Florence, Viale Morgagni 67/A, 50139 Florence, Italy.
authors: Luigi
authors: L
authors: Barletti
mesh_terms: D002118:Calcium / Q000378:metabolism*; D020013:Calcium Signaling; D042541:Intracellular Space / Q000378:metabolism*; D013269:Stochastic Processes; D013997:Time Factors
chemical_list: D002118:Calcium
keywords: Calcium oscillations; Goldbeter model; Intrinsic noise; Stochastic processes