Brain-computer interfaces, or BCIs, can help people with severe injuries or impairments regain the ability to communicate or move their arms and legs through robotic substitutes. The devices, which are about the size of a dime and are implanted on the surface of a person’s brain, serve as a communication link between the brain’s neural activity and an external device, such as a computer or a robotic limb. In this episode, Sara Goering, a University of Washington professor of philosophy,…





