Study of Olfaction / Vision Interactions in Expert and Novice Populations

The aim of this research project is to better understand the reciprocal influence of visual and olfactory systems on cerebral activity evoked by odors and visual stimuli. Given the importance of olfacto-visual learning in expert situations, the degree of expertise in olfaction will also be considered. In addition, the investigators will try to better understand the differences between expert and non-expert populations in olfaction through different levels of approach: sensory, genetic and cerebral. To achieve this, the investigators will use psychophysical tests, genetic analyzes and a non-invasive technique, functional magnetic resonance imaging (fMRI) to measure the brain activity of human subjects - novices or experts in olfaction - in response to different visual and olfactory stimuli.