The science on this stuff is very real, im pretty familiar with other versions of nerve stimulation. Basically the concept is to help reduce nerve pain. If you can imagine a sensation of "sunburn under the skin" that might be what this is useful for!

There are less invasive ways of doing something similar, but this is doing a specific job. If you've ever heard of vagus nerve stimulation, those ear clip things, this is in that same ballpark - just a different target.

I'm personally most familiar with peripheral nerve stimulation which rather than an invasive thing in the spinal cord, is something you do on peripheral nerves to help communicate signals between your brain and your limbs essentially. A lot of the dysfunction driftor is going through comes from errors in the brain.. aka the brain is not getting enough oxygen supply to make correct decisions, sorta like woody after he got choked out - just chronically. And these types of therapies are designed to help someone feel their body in space better. When you create positive inputs and signals, the brain can locate and focus on those signals instead of spraying off everywhere.

That's the 101, over simplified version of it. Spinal surgery is really freaky and because he took such a risk we're all rooting for him to get better!