I came across this interesting article and video from last November, making the analogy of human consciousness as the emergent phenomenon from brain feedback upon itself reaching a "threshold" level.
http://theconversation.com/how-a-trippy-1980s-video-effect-might-help-to-explain-consciousness-105256This author uses an example of visual feedback, although my experience has been with audio feedback. At a certain point in any audio amplification system, there is a threshold where audio feedback "emerges" around one frequency, and at that point the feedback appears to have no originating source. It is "everywhere at once."
A consciousness feedback loop would basically be a threshold phenomenon where the path of sensory organs to memory starts to become circular, and we "hear ourselves think." Humans live under that threshold for several hours every day while sleeping and this author uses the example of anesthesia, which appears to interfere with that feedback loop.
Throwing that out to the rabble, what are the weaknesses of the "consciousness as feedback loop" argument?