Consciousness is " A Spirit in man", its nothing physical at all...
But what we know about consciousness is that it is associated with the condition of a physical brain. So you cannot divorce it from the physical. Brain injury and general anesthesia can cause one to lose consciousness. Therefore, it is unlikely that consciousness can survive brain death.
Another proof of God, Spirits do not evolve, they are unseen and enduring. And they are created by God...
Spirits, like gods, exist only in your imagination. That is why they are "unseen". Photons only bounce off of things that exist.
No one can physically see human consciousness , we just know its there. One plausible nominee if I were to quess is the tangle of tiny internuncial neurons called the reticular formation, which has long lain hidden and unsuspected in the brainstem. God can communicate with humans through that path if he so appealed to. Its like a system of wiretaps.
This kind of speculation gets you nowhere. Why would there even need to be specialized receptors in the brain for communication with God? If he can perform miracles, then he shouldn't need to rely on special equipment to communicate.
The mind of man shouldnot be reduced to happenstance evolution, that insults the great design that it is.
I don't know how you insult a design, nor do I know why an evolutionary happenstance should be an insult to anyone. Perhaps we are not the exalted creatures that we like to think we are, but shouldn't we enjoy being what we are? The real world is far more interesting than the ones that we fantasize.