EEG
It is a painless procedure where small probes are attached to the scalp for analysing the brain’s activity by looking at its electrical waves. It usually takes up to one hour.
VT, or video EEG telemetry
This is like a normal EEG but with a camera recording. It lasts longer, typically one or two weeks. You will stay in a dedicated comfy bay room with bed, chair, TV, Wifi and en-suite bathroom. Friends and family can come and visit.
If seizures are not very frequent, medications may be reduced to allow seizures to happen. It is important to stay in the room as much as possible, to avoid missing a seizure. Skilled nurses will maintain your safety in case of seizures.
sEEG, or stereo-EEG
When information from normal EEG are inconclusive, some small probes are placed into specific areas of your brain with an ultra-precise robotic arm. It requires an admission similar to the VT investigation, but may rarely require to stay in longer.
In selected cases, the electrodes can also be used to disrupt the seizure network (RFTC) with a temporary beneficial affect on seizures frequency. Although temporary, this effect would give precious information on the chances of a successful surgery.
At the end of the recording, electrodes will be removed at the bedside and you can go home next day.