Brain Gate is a brain-computer interface developed by Cyberkinetics that allows a person to control external devices with their thoughts. It consists of a sensor implanted on the brain's motor cortex that detects neural signals, which are translated by external processors into movement of a computer cursor. This allows quadriplegic patients to control things like a TV or wheelchair. While expensive and requiring risky brain surgery currently, Brain Gate provides hope for independent living for paralyzed individuals, and future versions aim to be wireless with wider applications.