“…It has already been demonstrated that CFC and (particularly) PAC play an important role in the communication between regions that produce different brain rhythms (Palva et al, 2005;Canolty et al, 2010), and constitute the principle mechanism of how local oscillatory activity of low frequency is interacting with distant brain areas functioning at higher frequency (Florin et al, 2015). Results from recent studies in both animals and humans support a mechanism that oscillations at higher frequencies are often modulated by the phase of slower phase fluctuations (Osipova et al, 2008;Tort et al, 2008Tort et al, , 2009Tort et al, , 2010Cohen et al, 2009a, b;Colgin et al, 2009;Axmacher et al, 2010a, b;Voytek et al, 2010).…”