 Aging impacts our unisensory perceptual abilities as well as our ability to correctly combine signals from multiple sensory modalities to obtain a coherent percept of external events. Elderly individuals show greater difficulty determining the temporal order of audiovisual events, and possess a broadened temporal binding window TBW during which stimuli from different modalities are likely to be integrated into a single perceptual entity. Recent studies demonstrate that the TBW can be reduced following multisensory perceptual learning, however, the mechanisms at work remain poorly understood. Using an adaptive training paradigm, the goal of this proposed project is to examine how multisensory temporal processing can be enhanced in the elderly. Specifically, the investigators will measure the effect of multisensory perceptual learning on audiovisual temporal functions and its transfer to unisensory temporal tasks. Combining behavioral and EEG measures, the investigators will assess whether multisensory perceptual learning in the elderly changes only within the unisensory processes or reflects additional cross-modal processes. Furthermore, the investigators will characterize socioeconomic and health-related factors that contribute to age-related deficiencies in multisensory temporal processing and identify potential training outcomes for elderly subpopulations that are at greater risk. This work will provide insights into the brain mechanisms underlying multisensory perception and learning in the elderly. 