Abstract

This article seeks to clarify the relation between consciousness and quantum physics. It is argued that, in order to be consistent with quantum theory, one must never assert that conscious action has caused a given event to occur. Rather, consciousness must be identified with "measurement" or, more concretely, with an increase in the entropy of the probability distribution of possible events. It is suggested that the feeling of self-awareness may be associated with the exchange of entropy between groups of quantum systems which are so tightly coupled as to be, for all practical purposes, an indivisible unit. Such groups of systems may be understood to measure themselves. Two interpretations of the quantum theory of consciousness are distinguished: one in which consciousness is defined as quantum measurement; and one in which this measurement is hypothesized to correlate with a certain biological phenomenon called consciousness