Research On Dynamic Auditory Mechanism

Auditognosis, as one of humans sensation modality, is concerned much all through the ages. 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.Two experiments were conducted in this study. The first experiment tested the effect of ISI and numbers of stimulus sources on auditory apparent motion when stimulus duration was 50ms under binaural and monaural listening conditions. The second experiment was on the effect of stimulus duration,ISI,numbers of stimulus sources and mode of presentation of stimulus on auditory apparent motion under binaural and monaural listening conditions.Main conclusions of this research are as following".1), Binaural listening condition evidently improved apparent auditory motion under many sound sources, and evidently improved discrimination in non-motion sound. So, spatial clue is the very important clue for sound motion. When the stimuli were represented in MAMA paradigm, the result modes of sound motion and identifying the location of the first occurring stimulus of binaural and monaural listening conditions are quite consistent.2), The auditory system requires a minimum integration time for processing AAM stimuli. And the optimum apparent motion is dependent on the combination of ISI, burst duration of stimulus and all stimulus burst duration ( has relations with the number of sound sources ) .