[phaedrus441]

You're correct. Routine EEG (~30 minutes) can capture active seizures and sometimes patterns that might lead you to think someone is predisposed for a seizure. Often patients need long-term monitoring ("LTM") where they are connected to an EEG for several days to tease out the source of their problems.

[codeulike]

Yes that's it. But if op was seizing every time he worked for a few hours it would be fairly easy to capture that on an EEG