First: Get Alien knowledge..............
This is hogwash (IMO). I’m no nuerosurgeon (but I did stay at a Holiday Inn Express last night).
How does that complicated process of connecting all those nerves that make up the spinal cord work? I was once told by a spine surgeon that much of the nervouse system is unique as signals through the spinal cord can be mapped differently between the body and the brain.
First, making thousands of nerve connections so that a donor body would function takes a lot of time. How long will a brain survive on pumped oxygenated blood during this process? They might be able to connect the arteries and bones. But it would seem a complete robotic body would be a simpler task than trying to transplant a head. At least the technology is closer.
The Soviets grafted a severed dog’s head onto the body of another living dog (that retained its head). The test subjects survived a few weeks before infection set in.
A Cleveland scientist performed the some experiments with monkeys around 2000.
The Soviets allegedly stopped a dog’s vital signs and brought it back an hour later.
There are videos (including old film) on youtube with details.
First: Get Alien knowledge..............
I’m not sure they’re even to the point of being able to reattach the nerves in, say, a severed finger. I think they can do the mechanical stuff but not the “wiring”.