… happen when brain neurons die, deprived of the blood they need. Now, a new study is focused on the neurons still functioning in the brain. Rick Doyle suffered a … the reel anymore," said Doyle. "One of the most disabling effects of the stroke is the loss of the ability to use the arm and the hand," said Dr. Leigh Hochberg, the … been used in the treatment of epilepsy for years. In this study, a neurostimulator is implanted in the chest wall and a cuff electrode is wrapped around the vagus nerve …