Rhythms of the Collective Brain: Metastable Synchronization and Cross-Scale Interactions in Connected Multitudes

Figure 1

Phase-locking statistics. Sum of the number of phase-locking links between all cities for May 27. The horizontal axis represents a temporal span of instants during the day, and the vertical axis represents the period corresponding to the frequency of the wavelets used for extracting phase contents of the signals. The colour represents the sum of phase-locking links for and .