Research On Auditory Apparent Motion In Multiple-Noise Source Way

Based on the paradigm of MAA,MAMA and AAM, and also based on the "snap shot" theory, the illusion of auditory apparent motion was examined in order to determine the burst duration and interstimulus intervals (ISIs) at which AAM is heard when spatial information regarding source location was varied.Three experiments were conducted in this study. The first experiment tested the effect of stimulus duration and ISI on auditory apparent motion in the horizontal plane and multiple-noise source way. The second experiment was on the effect of stimulus duration and ISI on auditory apparent motion in the median plane and multiple-noise source way. The last one was on the effect of stimulus duration and ISI on auditory apparent motion when the separation was added.Main conclusions of this research are as following:1) Auditory apparent motion was affected significantly by the time factors (stimulus duration & ISIs), and the effect of ISIs was more significant. Less continuous motion was reported at longer ISIs.2) The ISIs were different between multiple-noise source way and two-noise source way to bring the sense of auditory motion.3) The judgment to the source direction was affected not only by the clues of spatial orientation but also by the whole stimulus duration in the multiple-noise source way.4) Relative to time factors (stimulus duration & ISIs), the effects of AAM by spatial factors (location of the start noise& noise separation factor) were less.