FIGURE 4.

A proof-of-concept illustration of how different oscillatory correlates could constitute prerequisites versus substrates. When a stimulus is presented at sensory threshold (A), it causes conscious experience (C) only if alpha power is sufficiently low (prerequisite in this example). Other oscillatory correlates (long-range synchronization in gamma or beta band in this example) can then arise (B), underlying the experience itself (substrates). If one of these two oscillatory mechanisms is not present (D), conscious experience is not achieved (E).