From the Phenomenology to the Mechanisms of Consciousness: Integrated Information Theory 3.0
The set ABC has 3 elementary mechanisms A, B, and C (at the bottom). Second-order mechanisms AB, AC, and BC are shown in the middle row and the third-order mechanism ABC (corresponding to the full set) is shown at the top. Altogether, the figure indicates the power set of possible mechanisms in set ABC. In the figure, each mechanism is highlighted by a red shaded area. The current state of the elements inside the candidate set but outside of a mechanism is undetermined for the mechanism under consideration.