Table 1.

Parameters held constant in the model simulations for all cell types and stimulus protocols

Symbol	Definition	Value	Unit
kmax	Maximum recovery rate from the refractory state	30a	s−1
k0	Baseline recovery rate from the refractory state	2a	s−1
KD	Dissociation constant of CaXD	2a	N.A.
τin	Time constant for entry into refractory state	3	ms
KF	Dissociation constant of CaXF	4	N.A.
τD	Decay time constant of CaXD after an action potential	50a	ms
ΔF	Incremental increase in CaXF after a stimulus	4	(normalized)
ΔD	Incremental increase in CaXD after a stimulus	1a	(normalized)
R	Refilling rate of readily releasable vesicle pool	0.1	s−1

^aParameters are the same of those used by Dittman et al. (2000).