A brain implant was design to detect and block the onset of seizures. According to the study that this will reduce the frequency in people with difficult-to-treat epilepsy. This could be other oprtion for Epilesy patients who don't respond with drugs.

The device consists of a neurostimulator that's smaller than a deck of cards. It's surgically implanted into a hollowed out part of the skull, along with a set of electrical leads that can both record electrical activity and dispense jolts of electricity. The leads are placed either on the surface of the brain or deep in the brain tissue, depending on where a patient's seizures begin. Surgeons locate this spot, known as the "seizure focus," prior to surgery using a combination of brain imaging and electroencephalogram (EEG) recordings, which measure brain activity from surface electrodes on the skull, or electrocorticography (ECoG), in which activity is recorded directly from the surface of the brain.

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