Table 1.

Deactivation time constants of calcium tail currents

Slowly deactivating component (% of total tail current) Slow τ (ms) Rapidly deactivating component (% of total tail current) Fast τ (μs)
Control (n = 31) 8 ± 1 5.8 ± 0.3 92 ± 1 340 ± 31
Ni2+ sensitive (n = 13) 3 ± 1 5.5 ± 0.6 97 ± 1 311 ± 18
Mix resistant (n = 15) 8 ± 2 5.6 ± 0.4 92 ± 2 343 ± 31
Ni2+ sensitive, Mix resistant (n = 5) 4 ± 3 6.5 ± 0.9 96 ± 3 344 ± 68
Mix resistant, Ni2+ resistant (n = 5) 15 ± 5 5.5 ± 0.7 85 ± 5 357 ± 57