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Picture yourself on a crowded sideway with people milling about. The acoustic and visual signals generated by the crowd provide you with complementary information about their locations and motion which needs to be integrated. It is not well understood how such inputs from different sensory channels are combined into unified perceptual states. Coherence of oscillatory neural signals might be an essential mechanism supporting multisensory perception. Evidence is now emerging which indicates that coupled oscillatory activity might serve to link neural signals across uni- and multisensory regions and to express the degree of crossmodal matching of stimulus-related information. These results argue for a new view on multisensory processing which considers the dynamic interplay of neural populations as a key to crossmodal integration.