Figure 1.

Illustration of the dual-modality continuous recognition task. Each level represents either the auditory or visual stream as labeled. Each box represents a stimulus presented in either the auditory or visual modality. Stimuli were presented for 2.5-s with an intertrial interval (ITI) between 800 and 1200 ms, with a mean ITI of 1000 ms. Repetition occurred across modality as auditory repetitions (AR) between the auditory stream and the visual stream or as visual repetitions (VR) within the visual modality. Repetition intervals of AR and VR trials varied between five levels, from 1 to 16 (1, 2, 4, 8, and 16). Repetition modality was crossed with repetition interval to yield 10 distinct repetition conditions.