ROCHESTER, Minn. — The human brain may actively reinforce the likelihood of future seizures by processing them in a manner similar to how it consolidates memories, according to a new study from Mayo Clinic. The research, published January 29, 2026, in the Journal of Neuroscience, reveals a prolonged and intensified deep sleep state following a seizure, mirroring the brain activity associated with memory storage.
Researchers analyzed long-term brain recordings from implanted devices in 11 individuals with epilepsy, comparing sleep patterns on nights following seizures to those on seizure-free nights. They consistently observed that the brain entered a prolonged period of non-rapid eye movement (NREM) sleep after a seizure, characterized by stronger and steeper slow brain waves – hallmarks of memory consolidation – particularly within the brain regions where seizures originated. Simultaneously, rapid eye movement (REM) sleep, crucial for emotional processing and cognitive health, was reduced.
“Sleep is one of the brain’s most powerful tools for learning and memory,” explained Vaclav Kremen, Ph.D., a neuroscientist and engineer at Mayo Clinic and lead author of the study. “What we’re seeing is that after a seizure, the brain may be engaging the same biological processes used to consolidate memories, but instead reinforcing the networks that generate seizures.”
The study suggests this process, termed “seizure-related consolidation,” effectively “saves” the neural pathway of the seizure, strengthening the underlying disease mechanisms. Patients, on average, slept longer and spent more time in deep sleep after seizures, but experienced less REM sleep compared to nights without seizures. This finding could explain why epilepsy often worsens over time and why patients frequently experience memory, mood, and sleep disturbances, according to the researchers.
Epilepsy affects an estimated 50 million people globally, and a significant number continue to experience seizures despite medication. Gregory Worrell, M.D., Ph.D., a neurologist at Mayo Clinic and senior author of the study, emphasized the potential for a new therapeutic window. “Instead of treating seizures as isolated events, this research shows they may actively shape the brain in ways that promote disease progression,” he said. “If we can safely intervene during this post-seizure window, we may be able to weaken seizure networks rather than reinforce them.”
The Mayo Clinic research is aligned with its Bioelectronics Neuromodulation Innovation to Cure (BIONIC) initiative, which focuses on developing personalized neuromodulation therapies for neurological diseases. Researchers are already designing adaptive, closed-loop brain stimulation systems that respond to seizures and sleep states in real-time, aiming to disrupt the harmful learning process and restore normal brain activity. The study highlights the potential of bioelectronic approaches to promote healthier brain function by combining long-term brain sensing, advanced analytics, and an understanding of how the brain adapts after seizures.
