What does it mean that something is a voltage gated calcium channel blocker in the brain?

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What does it mean that something is a voltage gated calcium channel blocker in the brain?

In: Biology

TLDR:
May reduce seizures.

Extra info:

Voltage gated = something that’s turned on and off by a change in voltage.

Calcium channel = a pore in the cell membrane that specifically lets calcium through.

Blocker = prevents the channel from opening.

So the channel let’s calcium through but has a gate that opens and closes based on voltage. These channels in the brain have partially to do with how excitable neurons are. So blocking the channel can make the neurons less excitable. Making neurons less excitable is a treatment for seizures