Brain–Computer Interface Could Restore Independence for Paralyzed People

Researchers have long sought ways of interpreting brain activity to drive devices that could restore function for individuals with conditions that disconnect the brain from the body. These authors demonstrate the feasibility of using a brain–computer interface (BrainGate^TM) for this purpose in humans. The system uses a 96-electrode array implanted on the brain’s surface, with electrodes projecting into the primary motor cortex, to record electrical activity. Cabling from the skull connects the electrodes to processing computers on a cart.

The system enabled a man with tetraplegia due to spinal cord injury to control a computer, operate devices such as a television, control a prosthetic hand, and perform tasks with a multijointed robot. Contr…