Zapping a nerve to hear in a crowd: new hope for brain injury patients?

This study looks at whether a noninvasive device that stimulates the vagus nerve can improve the ability to understand speech in noisy environments for people who have had a traumatic brain injury. Researchers will compare brain responses and speech test scores with and without the stimulation. The study involves 55 adults aged 25-55, including both those with and without a history of brain injury.