Computational model for interactions between auditory and visual motion mechanisms

Jain et al. showed that a strong motion signal in one modality (visual/auditory) influences the perception of a simultaneously present weak motion signal in the other modality (auditory/visual) for motion along the three cardinal axes. Furthermore, they also observed auditory crossmodal motion aftereffects (MAE) for all directions and visual crossmodal MAE for vertical direction of motion. We developed a neurophysiologically plausible computation model to explain the observed interactions. The current model was based on the hypothesis that these crossmodal interactions are mediated by the higher integrative multimodal areas, such as the superior colliculus (SC), through feedback connections to the lower unimodal areas in the human brain.