2. Local Seizure
The seizures that you perhaps are most familiar with are those that cause the entire brain to light up with neural activity. This is the kind of seizure that causes someone to fall to the floor foaming at the mouth.
However, another type of seizure is the ‘local seizure’. This has a slightly different cause, as here the surge in electrical activity is only affecting one part of the brain. For instance, this might just affect the motor cortex (the part of the brain responsible for controlling movement) or it might just affect the vision.
In a local seizure then, the symptoms tend to be much shorter-lived and much more specific. This is how a seizure can look very similar to a simple twitch or facial movement.