Levitin, D. J., Mathews, M. V., MacLean, K. (1999), "The Perception of Cross-Modal Simultaneity", in Proceedings of International Journal of Computing Anticipatory Systems, Belgium, 1999.
One of the oldest questions in experimental psychology concerns perception of simultaneous events, particularly when input arrives through different sensory channels (sight / sound or touch / sound). How far apart in time must two events be to be perceived as sequential? This paper reports preliminary data from a cross-modal simultaneity task designed for ecological validity. Results indicate a smaller threshold for successiveness than that found in previous experiments, which used more artificial tasks. The present findings are relevant to theories of time, order and perception.