Figure 1. Depiction of the stimulus used in Experiment 1.

Each trial presentation began with a pseudo-random period of up to 600 ms where only the fixation cross was presented. The visual stimulus was a white disc presented for 10 ms. There could be either one or two visual presentations. There could also be either one or two cross-modal events (inducers). These could be auditory or tactile signals. When there were two cross-modal events, they could both be the same signal type (Same), or one could be auditory and the other tactile (Different). When there was only one visual and one cross-modal event, they could be synchronous, or the cross-modal event could lead or trail the visual event by 100 ms. When there was one visual event and two cross-modal events, the visual event could be synchronous with either the first or second cross-modal event. When there were two visual and two cross-modal presentations they were always presented as two successive synchronous visual/cross-modal pairs separated by 100 ms.