Quantum consciousness concerns both the possible role that quantum mechanics has for understanding consciousness as well as the role that consciousness has for interpreting quantum physics. Quantum brain theories hypothesize that quantum physical processes occur within and between the neurons of the brain and have important effects on cognition as well as consciousness. Quantum cognition is a growing new field in cognitive science concerned with the application of the mathematical principles of quantum theory to human judgment and decision-making behaviour. What do all these theories have to do with each other? Quantum theories of consciousness have more to say about quantum physics than cognitive psychology and conscious experiences. Quantum brain theories have not been sufficiently ‘scaled up’ to provide clear implications for how quantum physical processes generate more complex cognition. Quantum cognition theories have avoided addressing fundamental issues about consciousness and have remained agnostic with respect to the quantum brain hypothesis. This article will address the problem of connecting these ideas together by connecting quantum cognition to the other two topics.
Quantum Bayesianism makes conventional assumptions about conscious experience and the world, which are “deconstructed” here. Conscious experience is succeeded by Heideggerian Existenz as world-thrownness. But unlike Heidegger, Existenz is conceived as a monadological dis-closure in the other-tuned, self-tuned and past-tuned “between” of the quantum thermo field brain’s dual mode vacuum state. The wave function is identified with Bayesian expectation conceived as the brain’s “self-tuning” capability subject to informative modification. Physical reality is never worldly but quantum at all scales. Worlds are disclosed only in monadological parallel in the quantum brain’s tuned between. This version of Quantum Bayesianism offers a novel solution to the measurement problem.