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"I'm aware that consciousness still exists under general anesthesia, but the brain is no longer capable of forming memories, so have fun stabbing me with knives, I'm actually going to feel it!"
But hang on, there's an interesting topic. Is consciousness the current processing, or is it the memory (and perhaps something additional)? Since not all nerve signals arrive in the brain at the same time, consciousness provably isn't immediate. Perhaps it's the recent memory of what just happened?
Separately, is it still pain if you're not conscious of it?
Doctors used to assert that babies didn't feel pain, because 1) they couldn't tell us about it, and 2) they didn't remember it later. They would just not anesthetize babies. Of course, that endpoint of this line of reasoning is horrifying, but it's still a fair question. When we say "pain" do we mean the firing of the nerves, or do we mean awareness of it?
To the best of my understanding this is why local and general anesthesia can be the best combo.
General keeps you from being conscious of the damage of the knives during the surgical procedure. Local numbs the area to keep the brain from being aware that damage is happening. Reducing trauma sounds like a good idea to me.
Pain is fascinating (particularly if you're not the one experiencing it.) Two people experiencing the exact same nerve stimulation can be painful to one but not the other. Context, life history and experience, and expectations all play into the experience of pain. In general, your brain determines if something is painful, then you do or don't experience that pain. People can be shot or stabbed and be completely unaware until the brain decides it's time to let them know.