Abstract
A lot of studies about velocity illusion have been performed, but the audio-visual interaction on velocity illusion has not been done yet. So, present study examined it using pendulum motion. In Experiment 1, we examined whether shifting sound pressure level (SPL) caused auditory velocity illusion. From the results, it was indicated that velocity was faster when SPL was louder. In Experiment 2, we examined effects on interaction of visual velocity illusion caused by shifting object size (Brown's law; Brown, 1931) and auditory velocity illusion caused by shifting SPL. From the results, it was indicated that velocity was slower by adding loud SPL white noise when apparent velocity was faster. However, it is indicated that visual velocity illusion was not very influenced by auditory velocity illusion as general tendency.
