Is it true you can be aware you had a seizure as it's happening?

Uncommon, but yes: Most people with convulsive-like movements who remain aware throughout the event are having stress-related symptoms and not seizures. The exception is the rare patient with frontal lobe seizures with limited spread of the discharges outside the frontal lobes. These are hard to diagnose, typically requiring the evaluation of an epileptologist. They are quite rare, though.