seraphim, it is very different to say that we cant ascribe consciousness to the brain and.... it is a very difficult thing, to ascribe consciousness to the brain.
It isnt that the brain couldn't do it, or could... it is just knowing how to go about proving it either way to a level of certainty is almost impossible in 2014.
This has led some to assume consciousness is non materialistic because of the problem, but that is just as untrue as me claiming it is purely materialistic... because we cant be sure either way because of the restrictions of testing the theory.
I for one have no issue with the brain having the senses and processing power to have what we consider a conscious thought process. I don't see the big issue in the concept at all, though I do respect the difficulty in proving its mechanism.
I do believe we will see conscious technology, A.I. that will help prove that input and processing can indeed lead to what we would consider conscious.
It is an interesting topic, but you can't make such claims seraphim, neither can the materialists.
As for how I see consciousness seraphim, We have input of vision, hearing, smell, touch and taste.....these are processed and linked together via memories i.e. neurons. We have processing power in the brain that can contemplate these inputs, it seeks patterns and previous experiences which mould our perception, then we have output such as contemplation of the inputs, largely looking for patterns, we have speech, we have movement, we have hormone reactions to the inputs etc. This may be called consciousness by some... I see nothing more than the sum of input, processing and output...so for me I see no need of an external source of anything. So I have no idea why people assume it. But as I made clear, this is almost impossible to prove as we have no means of testing it all ......yet.