Figure 3
Procedures in Experiment 2 and an example of results from the adaptive staircase. (a) In a block, adaptation phase (50-s at the first trial and 5-s thereafter) and a brief test phase were alternated until the block was terminated once the randomly interleaved two staircases were completed. During the adaptation phase, the 70% coherence level of RDK was presented, and the directional sounds were either presented or not presented according to the audio-visual conditions (congruent, C; incongruent, I; stationary, S; no-sound, N). During the test phase, the direction and coherence level of the test RDK were determined by separate staircases designed to nullify the visual MAE. (b) An example of a staircase for one participant (P3-LHS in Fig. 4b). Staircases were terminated after nine reversals, and the nulling coherence derived from the staircase was calculated by averaging coherence values associated with the last six reversals.
