Allow voltage-gatedCa⁺⁺  channels to open more quickly when the terminal is depolarised

Speed up transmitter exocytosis by holding vesicles in position to be exposed to the transient increase in intracellular Ca⁺⁺

Allow voltage-gated channels to open more quickly when the terminal is depolarised

Speed up vesicle recycling by exposing vesicles to the transient increase in intracellular Ca⁺⁺

Speed up terminal depolarization by holding voltage-gated Ca⁺⁺ channels in place for optimal effects