“…Importantly, these early effects of audio-visual integration are highly sensitive to asynchronies between the sensory signals (Sekuler et al, 1997;van der Burg, Olivers, et al, 2008). In order to compensate for offsets in stimulus processing as well as physical transfer times (Lewald & Guski, 2004), audio-visual integration during perceptual tasks tolerates small deviations from perfect synchrony (e.g., Vroomen & Keetels, 2010). Although this temporal window for audiovisual integration varies across different types of stimuli (e.g., Fujisaki, Shimojo, Kashino, & Nishida, 2004;van Wassenhove, et al, 2007), it typically does not exceed a few hundred milliseconds.…”