A new study suggests that sleep could trigger epileptic seizures in the brain by repurposing the processes used to solidify memories, potentially making seizures harder to treat or prevent. The researchers suggest that electrical stimulation could be used to prevent brain from "memorizing" the seizure. The study involved participants with drug-resistant epilepsy who were implanted with deep brain stimulation devices and an investigational seizure advisory system that records brain signals but does not attempt to interrupt seizures. The team found that people slept 24 minutes longer on nights following seizures, yet not all stages of sleep were prolonged. The findings could help test whether changing sleep-related brain activity after a seizure reduces the chance of future seizures.