To be fair, there is absolutely nothing within known physics that would explain why we're more than a complex biological computer and how subjective experience and qualia arise from it.

So we genuinely cannot even begin to guess as to what actually imbues consciousness into our neural processes. It could be anything from "it's actually just the physical processes" through "there's a soul piloting our brains by influencing quantum noise" to "the brain is basically an antenna for our metaphysical self and death/disability is the loss of connection"