Table 1.

Effects of [K⁺]_o on steady-state activation properties and deactivation kinetics measured with the two-electrode voltage clamp techinque

[K+]o (mm)	k (mV)	V½ (mV)	τdeact(ms)
2.0 (n = 5)	19.7 ± 0.7	− 31.7 ± 2.1	21.7 ± 0.8
5.0 (n = 5)	20.7 ± 0.7	− 32.1 ± 2.2	22.1 ± 0.7
10.0 (n = 5)	21.7 ± 1.2	− 30.2 ± 2.4	20.5 ± 0.6
50.0 (n = 5)	18.2 ± 0.7*	− 34.7 ± 1.5**	30.1 ± 2.4***

Data are expressed as means ±s.e.m. P statistics are based on comparison of data at 10 and 50 mm [K⁺]_o.

^*P < 0.03

^**P < 0.02

^***P < 0.01. τ_deact was measured at −45 mV.