Table 2.

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

Symbol	Definition	Value	Unit
τin	Time constant for entry into refractory state	3a	ms
k0	Baseline recovery rate from the refractory state	2a	s−1
kmax	Maximum recovery rate from the refractory state	30a	s−1
ΔD	Incremental increase in CaXD after a stimulus	4a	(normalized)
KD	Dissociation constant of CaXD	2a	N/A
τD	Decay time constant of CaXD after a stimulus	15a	ms
ΔF	Incremental increase in CaXF after a stimulus	1a	(normalized)
KF	Dissociation constant of CaXF	5	N/A
τF	Decay constant of CaXF	60	ms
R	Refilling rate of readily releasable vesicle pool	0.1a	s−1

N/A, Not applicable.

^aParameters are the same as those used in our previous paper, Sun et al. 2005.