Rapidly developing, rapidly recovering | Slowly developing, slowly recovering |
Less negative voltage midpoint | More negative voltage midpoint |
Rate voltage-dependent over wide range of membrane potentials | Rate voltage-independent beyond levels where fast inactivation is saturated |
Temperature-dependent | Onset not intrinsically temperature-dependent; |
| recovery strongly temperature-dependent |
Onset accelerated by repetitive pulsing | Onset accelerated by repetitive pulsing |
Unaffected by syntaxin | Strongly promoted by syntaxin |