Amber Pearson, 34, is the first person equipped with a small device the size of a plaster on the back of her brain. The 32mm implant sends an electrical pulse when it detects abnormal reactions in the brain to restore its normal functioning.

“I am really present in my daily life and it’s incredible,” the patient, who lives in Oregon, in the western United States, says. A study is currently being conducted at the University of Pennsylvania to see how this technique can be applied to other patients.