Activation (msec) | Generally fast | Intermediate | Slow |
τ at 20 mV | msec range | 54 ± 2 | ∼100–300 |
Inactivation (msec) | Voltage independent, fast and slow | Voltage dependent, ultrafast | Voltage dependent, fast |
τ at 20 mV | 10s of msec (N type) to sec (C type) | 0.8 ± 0.1, type unknown | ∼5–30, C type |
Deinactivation (msec) | Variable | Fast | Fast |
τ at −80 mV | ∼10–1000 | 5.6 ± 0.7 | ∼8 |
Deactivation (msec) | Fast | Slow | Very slow |
τ at −80 mV | ∼1–10, voltage dependent | 70 ± 3, little voltage-dependent | ∼300–1000, Voltage dependent |
TEA slows inactivation | From inside and outside | From inside | From outside |
Unit conductance (pS) | Small to intermediate | Large | Small |
In 100 mm KCl | ∼5–25 | 67 ± 2 | 12 |