Abstract
Classical mechanics cannot naturally accommodate consciousness, whereas quantum mechanics can, but the Heisenberg/Stapp approach, in which consciousness randomly collapses the neural wave function, leaves the conscious function unrestricted by known physical principles. The Umezawa/Yasue approach, in which consciousness offers superposed possibilities to the match with sensory input, is based in the first physical principles of quantum field theory. Stapp thinks of the brain as a measuring device, like a Geiger counter, and overlooks that the brain upholds second-order quantum fields that are symmetry-conserving with respect to reality. Consciousness is cybernetic rather than having a random function