Table 1.

Gating and conductance properties of P/Q-, N-, and R-type Ca²⁺ channels in hippocampal MFBs

	Vmid (mV)	k (mV)	τact at 0 mV (ms)	τdeact at −80 mV (ms)	i at 0 mV (pA)	Proportion of numbers of channels (%)
P/Q	−4.3 ± 0.7	4.7 ± 0.2	0.79 ± 0.05	0.09 ± 0.01	0.13 ± 0.02a	66
N	−2.6 ± 2.0	4.2 ± 0.5	0.93 ± 0.14	0.06 ± 0.01	0.13 ± 0.02a	26
R	−7.7 ± 2.1	6.7 ± 0.3	1.79 ± 0.28	0.55 ± 0.08	0.21 ± 0.05	8

^aValues were obtained from analysis of the total Ca²⁺ current.