clipped from: www.informationweek.com The BTCC's system uses several sensors placed over the areas of the brain that control motion to measure electrical activity in the region. The electical impulses triggered by the rider thinking of turning or moving the wheelchair are picked up and analyzed by an onboard laptop that passes the commands on to the wheelchair.
The system has an emergency stop that can be activated by the user puffing his cheeks.
The BMI adjusts itself over time to the characteristics of each driver's brainwaves. If a person dedicates three hours a day to using the system, the BMI can reach 95% accuracy in a week, researchers said.