I know you philosophy majors hate science, but come on. Receives from where? And why can't any of us remember our thoughts before the brain received them?
GT is right on this account : wild speculation does not supersede testable science. You gotta bring more than "here there be monsters". — Real Gone Cat
I have asked and received no answer to the question as to how the experimental results would be expected to look any different if the brain was a receiver of consciousness rather than a producer of consciousness.
I have skimmed through the linked papers and found nothing relevant to this question. I am not advocating that we should believe the brain is a receiver, I am merely entertaining the possibility and wondering what difference that would make, if it was the case, to what is observed. If Garrett can't answer that question then the possibility, however far-fetched it might seem, remains open.
If no imaginable observable difference can be given, then the empirical investigation of the brain does not depend on adopting one ontological possibility over the other. The investigation has value despite any ontological commitments just because of what it reveals to us. It amazes me that even when I clearly state that I incline more to the view that the brain produces consciousness I still get accused of saying things like "here be monsters".
As to your question, "receives from where?" the answer would be, assuming universality of consciousness as ontologically fundamental, simply from consciousness itself, from the "field" of consciousness, so to speak. Obviously, this would not be something which could ever be investigated and demonstrated to be true or false, empirically.
As to your other question "And why can't any of us remember our thoughts before the brain received them?", why would we remember thoughts which we had not received, and thus had not had yet? Also the speculation is that consciousness and thus the ability to form thoughts might be received rather than produced by the brain, and that would not necessarily entail that the thoughts are not produced by the brain. The brain might "process" the experiences it receives into thoughts and feelings just as we imagine it does in the physicalist context.
In any case, I am not proposing that anybody adopt this speculative view, and I introduced it just to show that our ontological commitments are really irrelevant to, and not justified by, our empirical investigations. Physicalism is equally speculative, even if it might seem more plausible due to our inbuilt modernist biases, and I am sure there are very good neuroscientists out there who are devout Christians, or Buddhists, or Muslims and so on; and I am sure their work is not compromised by their metaphysical beliefs.
If you and GT cannot back up your objections with any actual arguments then that is rather telling don't you think?