Fig. 8.

PAC in LIP between alpha/low-beta phase and gamma power is state-dependent. We measured phase–amplitude coupling after first binning trials based on the theta phase, with one bin centered on the “good” theta phase (i.e., the phase associated with better visual-target detection) and the other centered on the “bad” theta phase (i.e., the phase associated with worse visual-target detection). Panels a, b show power as a function of alpha/low-beta phase by theta-phase bin (good vs. poor) and by attention condition (cued [orange] vs. non-cued [blue]), for both a LIP (N = 96) and b mdPul (N = 95). c, d The strength of PAC was measured by using the fast Fourier transform to extract the amplitude of a one-cycle, sinusoidal component (see Fig. 2a for an illustration of this approach), for both c LIP and d mdPul. The black (cued location) and gray (uncued location) dots represent statistically significant results after corrections for multiple comparisons