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Effects of Calcium-Channel Noise on Dynamics of Excitation-Contraction Coupling in Paced Cardiac Cells
Joint Authors
Source
Discrete Dynamics in Nature and Society
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-07
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
We study a simple discrete model with the impact of calcium-channel noise on the beat-to-beat dynamics of cardiac cells.
The effects of the noise are assessed by bifurcation analysis and power spectrum analysis, respectively.
It is shown that this model can undergo period-doubling bifurcation and Hopf bifurcation if there are not random perturbations.
Under random perturbations, the period-doubling bifurcations of the model can be observed, and the invariant curve from Hopf bifurcation is perturbed to an annulus on the plane and then becomes a totally disordered and randomly scattered region.
By the power spectrum analysis, we find that the existence of high-frequency peak in the power spectra links to the period-doubling orbits, while the existence of low-frequency peak corresponds to quasiperiodic orbit.
American Psychological Association (APA)
Ma, Jiying& Xiao, Dongmei. 2013. Effects of Calcium-Channel Noise on Dynamics of Excitation-Contraction Coupling in Paced Cardiac Cells. Discrete Dynamics in Nature and Society،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-490647
Modern Language Association (MLA)
Ma, Jiying& Xiao, Dongmei. Effects of Calcium-Channel Noise on Dynamics of Excitation-Contraction Coupling in Paced Cardiac Cells. Discrete Dynamics in Nature and Society No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-490647
American Medical Association (AMA)
Ma, Jiying& Xiao, Dongmei. Effects of Calcium-Channel Noise on Dynamics of Excitation-Contraction Coupling in Paced Cardiac Cells. Discrete Dynamics in Nature and Society. 2013. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-490647
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-490647