(i) What is the reality underlying quantum mechanics?
(ii) What is the relation between mind and brain?
Most recently, I have been focusing on the following issues:
(i) Extending the class of dynamical collapse theories; clarifying the status of probability and locality in many worlds theories; and extending Bell’s theorem beyond quantum theory.
(ii) Experimentally testing the integrated information theory (IIT) of consciousness using filled/non-filled pairs; extending IIT to quantum mechanics to render the consciousness-causes-collapse hypothesis testable; and computational approaches to free will.