Emily Borghard has a computer inside her skull, but you wouldn’t know it to look at her. A small bump behind her left ear, the only external evidence of her implant, is partially covered by a tuft of hair that’s still growing in from the last time she had the batteries changed. Before Borghard received a brain implant, she was having as many as 400 “spikes” of seizure-like activity a day, along with multiple seizures. This unrelenting storm of abnormal neural activity turned her teenage years into a semiconscious nightmare. She couldn’t drive a car, attend classes or be left alone for more than half an hour. “People were finding me on the floor, finding me walking around the small college town we were living in, confused and not knowing what was going on,” she says.