Most of the time it's only an odd conceit of waking life that it is awake. Just because there are colours and sounds doesn't mean that you aren't fabulating as in a dream, only with guidelines. Perception is through the mind and the mind has no senses, is numb, deaf, blind. (Perhaps smell is the only sense that doesn't arise in dreams.) Everything works just as the functionalists says it does. That's all fine as long as you are directed out of the mind - orthogonal to experience. Every way of expressing it however has its metaphysical double who plays interference for the other team. And you've lost track of which are the visitors and which the home side.