I’m interested in the phenomenon that no matter how messed up (or absent) my sensory input becomes it doesn’t seem to impact my “inner observer”. The only thing impacting it is sleep or loss of consciousness, yet even then there can be moments during these states that this observer can become lucid.

It’s like the science of the soul and one notable implication is dementia, when people become unable to function and recognize things, I wonder if that “inner observer” is still just as in-tact as it is on a huge dose of LSD?