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In this paper, by introducing a particular kind of parametric
non-Gaussian noise (NGN) via the inositol triphosphate (IP"3), we study the
effect of the NGN's deviation q from the Gaussian noise and its correlation
time @t, as well as the cell number N on the intercellular Ca^2^+
oscillations in an array of bi-directionally coupled cells. It is found
that Ca^2^+ oscillations may become the most ordered in time when q, @t or
N is varied, which characterize the phenomenon of coherence resonance and
system size resonance. These results show that the temporal coherence of
the Ca^2^+ oscillation can be enhanced when the NGN or the cell number is
optimal. This work extends the study of the NGN in calcium systems and
provides new insight into the roles of the NGN in the intercellular Ca^2^+
oscillations in the coupled cells.
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