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Coupling and internal noise sustain synchronized oscillation in calcium system
1The Institute for Chemical Physics, Beijing Institute of Technology, Beijing, 100081, PR China. qsli@bit.edu.cn
Biophysical Chemistry
|June 1, 2007
Summary
Coupling two calcium subsystems can induce oscillations and synchronization. Internal noise, in cooperation with coupling, also leads to similar synchronization phenomena in non-identical oscillators.
Area of Science:
- * Biophysics
- * Nonlinear Dynamics
Background:
- * Calcium subsystems are crucial in cellular processes.
- * Understanding coupled oscillator dynamics is essential for biological modeling.
Purpose of the Study:
- * To investigate the impact of coupling on two non-identical calcium subsystems.
- * To explore the interplay between coupling and internal noise in these systems.
Main Methods:
- * Theoretical analysis of coupled nonlinear oscillators.
- * Examination of bifurcation diagrams and cross-correlation times.
Main Results:
- * Coupling induces oscillations and expands the oscillatory region in bifurcation diagrams.
- * Coupling synchronizes non-identical oscillators, with cross-correlation time showing a non-monotonic dependence on coupling strength.
- * Cooperative effects of coupling and internal noise also lead to synchronization.
Conclusions:
- * Coupling is a significant factor in generating oscillatory and synchronized behavior in calcium subsystems.
- * The combined influence of coupling and internal noise can effectively drive synchronization.
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