Connectivity modulation during sleep onset, reduction of movement: study via graph theory application to EEG data
Sleep onset is characterized by specific and orchestrated patterns of frequency and topographical EEG changes. Power analyses and computational assessments of network dynamics have described an earlier synchronization of the centrofrontal areas rhythms and a spread of synchronizing signals from associative prefrontal to poste- rior areas. We assess how ‘‘small world” characteristics of brain net- works, as reflected in EEG rhythms, are modified in the wakefulness- sleep transition comparing pre- and post-sleep onset epochs.