The Stentrode is inserted into a blood vessel that sits over the motor cortex. The device is delivered through a small catheter, and when in position, the catheter is removed, A device the size of a matchstick implanted in the brain may help a group of paralyzed people walk using only their thoughts and a robotic exoskeleton. The stentrode expands to press the electrodes against the vessel wall close to the brain where it can record neural information and translate these signals into commands that can be used to control an exoskeleton. There is no craniotomy, no risk of infection; it is all run through the groin and passed inside the body up into the brain. The stentrode, crafted from a space-age alloy called nitinol, could also benefit people with Parkinson’s disease, motor neuron disease, obsessive compulsive disorder, and depression. It could even predict and manage seizures in epileptic patients.