For people living with refractory epilepsy, the brain is like a city that can suffer a blackout any time lightning strikes. Without warning, an abnormal neural discharge can sweep through the intracranial circuits, leaving behind convulsions, loss of consciousness and years of lingering panic. Around one-third of epilepsy patients worldwide are completely unresponsive to existing medications, while traditional craniotomy resection surgery often carries the risk of irreversible neurological...