@Fil Albuquerque,
If you require a "model", how about this?
"Reality", in it's most fundamental form, is intelligence without form, shape, identity or self-awareness. But it is a form of non-localized awareness.
Awareness as we experience it is embodied. We perceive ourselves as having bodies and specific places in the world.
This localization, the fact that we have brains, is what enables self-awareness. Self-awareness requires memory, and to store memory, a brain is needed.
I realize that all this is way beyond what we can say for certain. I can't say that any of it is fact. It's just a perspective, or perhaps a theory..