Such as? "Computational processes" ≈ "arbitrarily approximable by a classical computer," and QM absolutely fits in there: I just solve Schrodinger's equation for the Hamiltonian you care about to whatever precision you need. It will take exponential time, but that seems perfectly reasonable.
Exactly. Furthermore, there is no evidence that quantum processes are at all salient to what the brain does. There is nothing in the I/O behavior of a human brain that provides any evidence of quantum processes going on. There are also good theoretical reasons to believe that quantum mechanic is not salient to the operation of the human brain. The brain is thoroughly thermalized, so it decoheres in time scales that are vastly faster than any of its interesting behaviors.
