Responsive Neurostimulation (RNS) is an epilepsy treatment that uses an implanted device, called a neurostimulator, to help prevent seizures. The neurostimulator is a small battery-powered device that is implanted in the skull and contains thin wires (leads) that are placed in the area or areas of the brain where the seizures originate. When the neurostimulator detects activity that could lead to a seizure, it sends a pulse of electrical stimulation through the leads, stopping the seizure before it begins.
No brain tissue is removed with RNS and the implant can be turned off or removed at any time.
Candidates for RNS include those who have partial (focal) onset seizures, seizures originating in one or two areas of the brain and have frequent and disabling seizures even after taking anti-seizure medications.