>> But I have had a feeling of "I came back" which I have solely after waking up from anasthaesia.
> These sound like anaesthetic side effects.
General anesthesia[0] used in surgeries are effectively artificially induced comas. The pre-op discussion with the anesthesiologist includes them describing this and that there is a very real risk that you will die from its usage.
Regaining consciousness after having it applied most certainly invokes a feeling of "I came back" and has nothing to do with side effects.
Source: I have had two general anesthesia[0] and one epidural[1] surgeries.
The feeling of blinking out and suddenly being "back" is far from exclusive to comas or general anesthesia; it has been replicated via deep meditation. Specifically, it seems to be the core feature of what's technically known as nirodha samapatti (lit. "attainment of ceasing").
An easy way of intuiting what it might feel like (if imperfectly, of course) is just keeping a high state of lucidity and mental focus whilst you're naturally drifting in and out of light sleep; this might seem challenging at first but it's actually quite doable.
OK but you haven't provided any trustworthy evidence, just a personal anecdote. This is not convincing, especially since some anaesthetics have known long term psychological effects. There's no reason to believe that a person experiencing them would correctly identify the cause intuitively. In fact that would be extremely surprising.
I have a theory that some people don’t fully wake up after the anesthesia wears off. A part of them is still sleeping. Like memory bank takes a slow break and stops working. I suspect it happened to me and now I am looking for answers.
I don't agree with anesthesia having long-term affects similar to their initial use (excluding any allergic reactions of course).
I will say that I believe when a person experiences significant pain of any kind, it changes their lived experience such that what previously might have been painful may not be as much if the event causing the pain is relatively less. Much like how the high-water mark of a river indicates what a riverbank can withstand.
For example, a person who has never had to use crutches due to injury may see having to park their car a great distance from a store's entrance as being "a pain in the ass" and might complain loudly. Yet that same person who doesn't have the option to drive to the store due to an injury, or if they did would have to use crutches to move about, may very well not care at all where they park once they regain full mobility.
In short, pain is relative and once one "raises the bar" of what is considered painful, that which once qualified as same very well may no longer be so.
Problem is, it takes the memory of "new levels of pain" to make this happen.
It's a reasonably well understood problem for older people in particular that general anaesthesia can trigger some kind of cognitive decline in some people.
Separately at least in Australia you are given specific advice regarding avoidance of operation of construction machinery, farm machinery and the like.
Does general anesthesia affect memory? I swear my ability to form memories fell off a cliff after a procedure years ago. Going in is the last thing I vividly remember and everything since is hazy or ephemeral.
