Semantic integration of differently asynchronous audio-visual information in videos of real-world events in cognitive processing: An ERP study

► N400 is related to the semantic integration of asynchronous multisensory information. ► P600 reflected the evaluation on mismatch of asynchronous multisensory information. ► The semantic contextual integration of asynchronous multisensory information exists. ► Environmental sound could affect the cognitive processing of a visual event. ► The integration process might vary with the asynchrony of audio-visual information.