I didn't go to Case until I was 30. In 82 I was doing my graduation project with direct neural stimulation. My major field was biomedical engineering. I was doing a controller to allow a set of electrodes to be stimulated. A quadriplegic can usually raise a shoulder and gravity pulls it back down, and can push the shoulder forward and muscle tension will pull it back. This gives 2 degrees of freedom for a shoulder controller. Controller goes one one shoulder and the electrodes go in the other arm. My controller did the charge injection and the program came from a PDP-11. Lot of interesting work was done with electrodes; you can't have a net charge injection or you get acid and burn out the nerves. I got out of the medical dodge in 84 (another story) and haven't really kept up on current activities.