When you say that consciousness came before the brain,...
I did not say that. I said it might possibly have done. If you continue to misquote me, I will regard you as a dishonest individual and I have no time for dishonest individuals.
...what medium are you proposing as the carrier of the consciousness before it becomes dependent on the brain to generate it (as we have most assuredly found, via the accidental alterations to people's brains that have been found to profoundly alter their consciousnesses)?
The nature of consciousness is not fully known. Consciousness as with all things is subject to ideas of possibilities and is quite possibly the source of all ideas of possibility.
It is possible that something outside the physical universe was responsible for the universes existence. The circular notion of an endlessly regenerating universe (or even an infinite set of physical universes) while interesting don't really convey much in the way of explanation on how this happens, or where consciousness might fit into it all. The circular theory of regenerating universe would suppose that consciousness is part of that regeneration process and it could be argued that the variations of every individual conscious awareness are limitless within the structure of the theory, but it could be argued equally as a theory that we are within a vast (from our perspective) virtual reality mechanism which we as consciousness designed, operate and interact with, just because we can and enjoy the thrill of it all.
Either (and all) theories to do with the fact that we are within this situation we call the physical universe naturally force us to assume that brains produce consciousness and we have no tools to show us otherwise and for all intent and purpose the personalities we love and cherish do desist when their bodies die and are no more physically contributing to our situation (outside our own continued memory of them) and thus we are able to assume they may not exist in some other unknown state of awareness based on what small knowledge and limited tools we have available so far which contribute to our assumptive natures.
For all we know, consciousness is everywhere, and there is nowhere in this universe where it is not. The point being that the assumption that consciousness needs some kind of physical medium in which to operate, and that the universe is practically filled with that medium, we don't even know that it does not reside in the very planet, literally having an experience of being a planet or that its essence is inseparable/indistinguishable, and that form only gives it the illusion of being separate.
Which is to say, your consciousness and my consciousness may well be exactly the same essence and only appear to be different in the framework of physical things and personal experience.
We don't know that consciousness might be exactly 'what god is' even.
Frankly, we don't know much at all, which is precisely why possibilities exist in our thinking processes.
Frankly, I am definitely annoyed at your claiming the superior ground of logic when you resort to this perverse retreat from taking a stance. You are doing the postmodern dance, which I find a bankrupt, and highly irritating, attitude of smug untouchability.
You need to be aware that arguing from an emotional position is contray to good logical argument.
It is muddying the waters and forcing you to make mistakes in judgement and attempt to pin those onto my personality. My position of logic is better ground than belief, I won't deny that, and until it can be shown that 'I don't know or I do know' is not the best position to be in, then it is the best position to be in and your accusation of perversion is nonsense at best and untruthful for that.
That my position makes me 'untouchable' is not here nor there. What are you wanting to achieve in relation to me? Destroy me? Convert me? Attempting to insult me or attempting to blame me for somehow affecting your emotions is empty meaningless untruthful expression. Learn to control your emotions and if you feel that [whatever] is pushing your buttons, then take the opportunity to examine truthfully within your own personality why this is so. You will find the most likely reason is that what I am saying is challenging your beliefs, and beliefs are often precious to those who hold fast to them.
Let your beliefs go and apply the position most honest, which is that you know some things and don't know most things.
Failing that, the best advice I can offer is that you desist with interacting with anything which in your own understand causes you to make such needless expressions