Content congruency and its interplay with temporal synchrony modulate integration between rhythmic audiovisual streams

摘要: Both lower-level stimulus factors (e.g., temporal proximity) and higher-level cognitive content congruency) are known to influence multisensory integration. The former can direct attention in a converging manner, the latter indicate whether information from two modalities belongs together. present research investigated how these interacted perception of rhythmic, audiovisual (AV) streams derived human movement scenario. Congruency here was based on sensorimotor correspondence pertaining rhythm perception. Participants attended bimodal stimuli consisting humanlike figure moving regularly sequence auditory beat, detected possible deviant. moved either downwards (congruently) or upwards (incongruently) downbeat, while both situations synchronous with lagging behind it. Greater cross-modal binding expected hinder deviant detection. Results revealed poorer detection for congruent than incongruent streams, suggesting stronger integration former. False alarms increased asynchronous only indicating greater tendency report due visual capture events. In addition, increase perceived synchrony associated reduction false pattern reversed ones. These results demonstrate that congruency as top-down factor not promotes integration, but also modulates bottom-up effects synchrony. discussed regarding theories attentional entrainment may be combined context rhythmic stimuli.