The perception of movements or objects in the environment is based on several sources of sensory information. The project includes several studies that aim to determine how the contributions of different senses to the perception of textures or movements of one’s own body change during non-pathological aging. To this end, we will produce virtual textures to be explored tactically in the presence or not of congruent or incongruent sound stimuli. We will also test visuo-tactile interactions in a perception task of body movement. Psychophysical approaches will allow us to quantify the benefit of multimodal combination in young adults and compare it to the performance of older adults. The possible brain functional reorganizations underlying these multisensory representations in the elderly subject will then be explored in functional magnetic resonance imaging (fMRI).
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