Figure 1.

Schematic overview of the experiment. Following the baseline motion sensitivity assessment, the participants began one of the auditory motion adaptation (leftward or rightward) blocks. Participants were instructed to maintain fixation on the central fixation point during the experiment. Each trial began with an auditory motion exposure phase (60 s for the first trial and 10 s for each subsequent trial in that block) followed by one of six possible test motion stimuli lasting 1 s (the coherence level for each of the 6 motion stimuli was individually catered to each participants' baseline performance), and the participants subsequently indicated whether they saw the test stimulus move leftward or rightward. The test stimulus in the above example trial shows a 50% coherence trial for illustration purposes. The black arrows in the example test stimulus indicate the direction of each dot in this example for display purposes only. Each sound motion adaptation block was followed by a sound motion adaptation block with the sound moving in the opposite direction and was repeated once, resulting in 4 blocks total. Block order was counterbalanced across participants.