No way consciousness linked to any human physics, brain is just a translator between physical and spiritual bodies. Our individuality is it.
If someone is in a coma, their consciousness is in hiatus; they can be in a coma for years and when they awaken, they do not have any conscious memory of the passing of time. If consciousness was separate from the brain that would not be the case. The brain is where we process all conscious thought.....when we sleep, the brain goes into a completely different mode. If we wake up in the middle of the night, we have to look at a clock to see how long we have been asleep.
We have a physical body, not a spiritual one. We are completely mortal and when the body dies, the soul dies with it. (Ezekiel 18:4) A "soul" in the Bible is the living breathing creature. When we die, all consciousness ceases. (Ecclesiastes 9:10)
We are the product of a gene pool and we do not get to choose which genes we end up with. Those genes largely determine who we will become, along with the environment in which we were raised. No one can come to Christ unless God invites them. (John 6:65)
What makes you think we have a spiritual body along with our physical one?