Allowing for the fact that "matter" is pretty weird stuff at the quantum level.
Aside from the fact that we can't model the observable behavior of the brain, do you personally believe there is something going on other than material processes?
Since you are I are polar opposites in our basic worldview (you believe the material world is all that there is) - I don't expect you to agree with me on anything. But here goes...
I perceive a spiritual realm which is separated from the natural realm by the 'firmament.' The brain acts like a receiver for the spirit in addition to performing command functions, synchronizations and data acquisition for the physical body.