Perception visuelle et olfactive chez les enfants avec un trouble du spectre de l’autisme : implications sur l’acceptation des aliments

Abstract : The development of eating behaviour is a complex phenomenon in a majority of children with Autism Spectrum Disorder (ASD). This doctoral thesis aims to better understand the extent to which perceptual particularities (visual and olfactory) in children with an ASD influence their acceptance of a food.Our results show that ASD children differ on a sensorial level from Typically developed (TD) children, these differences depending on the nature of the stimuli (vision and olfaction). They also attribute a lower valence to stimuli which are, a priori, pleasant. This was particularly true for visual stimuli. Finally, we observe a link between hedonic judgement and the degree of neophobia in children with an ASD. This was not the case in TD children.Next, we evaluated the effects of olfactory familiarisation on the valence of an odour. Our results show an increase in positive emotional expression relating to the smell which has been familiarised. We also observed that two thirds of the children, notably those with the most sensory particularities, chose the food that carried this odour.The final objective of this thesis was to consider the perspectives of ASD children and to compare them with results obtained in neuroscience. Our observations highlight the relevance of establishing a dialogical research and/or support approach that allows us to build and develop our knowledge of food and eating. Our studies underline the importance of considering the perceptual profiles of ASD children when designing educational tools to support eating behaviour development
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Submitted on : Monday, September 18, 2017 - 7:05:10 PM
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Anne-Claude Luisier-Maret. Perception visuelle et olfactive chez les enfants avec un trouble du spectre de l’autisme : implications sur l’acceptation des aliments. Neurosciences [q-bio.NC]. Université de Lyon; Université de Fribourg (Suisse), 2017. Français. ⟨NNT : 2017LYSE1090⟩. ⟨tel-01589671⟩

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