Semantic knowledge influences prewired hedonic responses to odors |
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Authors: | Poncelet Johan Rinck Fanny Ziessel Anne Joussain Pauline Thévenet Marc Rouby Catherine Bensafi Moustafa |
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Institution: | Neurosciences Sensorielles, Comportement, Cognition, Université de Lyon and Centre National de la Recherche Scientifique, UMR5020, Lyon, France. |
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Abstract: | BackgroundOdor hedonic perception relies on decoding the physicochemical properties of odorant molecules and can be influenced in humans by semantic knowledge. The effect of semantic knowledge on such prewired hedonic processing over the life span has remained unclear.Methodology/Principal FindingsThe present study measured hedonic response to odors in different age groups (children, teenagers, young adults, and seniors) and found that children and seniors, two age groups characterized by either low level of (children) or weak access to (seniors) odor semantic knowledge, processed odor hedonics more on the basis of their physicochemical properties. In contrast, in teenagers and young adults, who show better levels of semantic odor representation, the role of physicochemical properties was less marked.Conclusions/SignificanceThese findings demonstrate for the first time that the biological determinants that make an odor pleasant or unpleasant are more powerful at either end of the life span. |
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