Article,
Periodic calcium waves in coupled cells induced by internal noise
Chemical Physics Letters, (2007)
Abstract
We show that internal stochasticity, originating from finite cell
sizes and related small numbers of reactant ions participating in
the dynamics, is able to extract a characteristic spatial frequency
of calcium waves in the medium of diffusively coupled cells. Internal
noise is thereby the only agent acting on the system. As the spatial
periodicity is best pronounced at an intermediate level of stochasticity
the reported phenomenon is thus a novel observation of internal noise
spatial coherence resonance in biochemical tissue-like media. In
addition, results shed light on the stochastic versus deterministic
nature of dynamics at the cellular and tissue level.
