Topic: amplitude-coupling

Local brain activity and interactions between areas are modulated on various timescales from the order of milliseconds to several minutes. Two distinct modes of functional interactions can be defined based on the phase- and amplitude-relations of large-scale brain activity, respectively. However, little is known about the dynamics of both coupling modes over the various timescales. Moreover, it is traditionally assumed that phase-coupling displays faster dynamics than amplitude-coupling without clear empirical evidence. Here, we leveraged the high temporal precision of magnetoencephalography (