Fig. 5.

Behavioral relevance of coupled delta and alpha signatures. The hit rate difference between predicted and nonpredicted contexts is displayed as a function of the frontal delta phase and the posterior alpha phase. Note that behavioral performance is increased during the peak of the frontal delta phase, which results in lower posterior alpha power (Fig. 4B). In addition, target detection also depends on the alpha phase and is higher during the trough of the posterior alpha rhythm.