Two answers to that ─ first, only what it tells me; and second, like the whole of the brain, it's entirely physical.Self has travelled with you? Okay. But do you really know its nature?
However much we've yet to learn about the way brains work, we can say the sense of self arises from physical brain function, since there's no credible alternativeYour statement "YOU assume there's a world external to the self, because if you didn't, you wouldn't post here.", presumes a localised object as the self. But what actually is the form of self?
What, even among friends?Sarcasm will not do, sir.
Then of course I unreservedly apologize.
No. But there are times, sleep being the main example, anesthesia another, when my conscious mind isn't present and "I" don't know I exist.Do you have any doubt that you exist?
As I've said before, 'mind' is a word for an imprecisely defined collection of brain functions, generally including emotional states, memory, language, 'personality', problem-solving, decision making and so on.I can answer for Vedanta. The self, the awareness "I exist" is more intimate than an apple on your palm.
It is the subject that illumines and knows the objects, including the body and the thoughts, emotions, imaginations that comprise the mind.
We can certainly agree on that. It's an idea, a concept with fluffy edges.As it is the very subject that knows, it is naive to search for it presuming that it is an object.
As against that, the conscious part of the brain is usually the last to know what the non-conscious brain is doing, and the non-conscious brain is doing just about everything ─ forming these words for me and directing my fingers in typing them, reminding me to buy some more milk, noticing something for sale and suggesting it'd be a good present for my granddaughter, making me cautious, or delighted, or affectionate ─ as well as monitoring my sensory input and responding to it, and keeping track of how my body and its various subsystems are functioning.Vedanta prescribes neti-neti (not-this not-this) enquiry process to strip away all objects that we take as 'Me' to unravel the subject.
Yes and no (again) ─ it feels like me who's looking at this screen and conversing with you; I need to go into a different mode of thought, more deliberate and analytical, to consider my body as a set of subsystems, those subsystems as sets of interacting biochemicals and bioelectricals, those in turn being patterns of atoms and spaces, and those in turn being fundamental particles and energy speaking QM to each other.Even as sub-atomic scale objects are not what they seem to the senses, the self is not what it seems to the senses.
I think the English expression is Harrumphh ...I know that this answer will not satisfy you and you will continue as Trump "I already won"
But it remains the case that I see the universe, and us as part of it, as entirely material because, as I said, there's no credible option, not even in theory.