NeuroSpreadNeuroSpread
For families & care teams5 real seizure examples

Watch where a seizure travels on the brain

Upload a hospital EEG or try a sample. We turn wires on the scalp into a 3D picture you can rotate, slide through time, and tap to ask simple questions — plus a written summary you can share with your doctor.

Sharp peaks — strongest hot spotsSmooth spread — wider activity pattern
Try a sample seizureUpload our EEG file

No jargon required

Two map styles — sharp vs smooth — help you see the same seizure in two ways without learning lab acronyms.

Follow the wave

Move the time slider to see how activity appears to move across the brain surface.

Questions welcome

Tap a region and ask what it means in everyday language. Export a draft summary for your neurology visit.

Bring your own EEG file
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No timestamps to enter. Upload the file from the hospital system — we find the most active seizure segment, map it on a standard brain, and show how activity spreads. For learning only; not medical advice.
Tap to choose your EEG file
Loading 3D cortex…
Seizure spread movie
Sharp-peaks view · same recording as the 3D map (computed, not AI-drawn).

Please read this

NeuroSpread is an educational viewer on public or uploaded scalp EEG. It uses a generic brain shape, not your loved one's MRI. It does not diagnose epilepsy, pick surgery sites, or replace a neurologist. Always rely on your care team for treatment decisions.