Corresponding author: Aurélie Miceli, Cognitive Psychology and Neuropsychology department, University of Mons (UMONS), Place du Parc, 18, 7000, Mons. Email: aurelie.miceli@umons.ac.be The knowledge stored in semantic memory includes information about categories and features, as well as the semantic relationship between concepts. In the semantic network, taxonomic (which refers to similarity relations based on shared features) and thematic (which refers to contiguity relations based on co-occurrence in events or scenarii) links are both salient. In Alzheimer’s disease (AD), there are contrasting results regarding the pattern of taxonomical and thematical deterioration in the semantic network. Also, a remaining issue is to determine whether semantic processing of both kinds of links is embodied, as suggested by the upholders of the embodied cognition (e.g. Barsalou, 1999, 2008) and if the sensorimotor system takes differentially part in the semantic process in ageing and in AD. In order to investigate these questions, sensorimotor sensitive electroencephalogram rhythm will be analyzing through young adults (study 1), healthy elderly people (study 2) and AD participants (study 3) performing a semantic priming task in which the target could be preceded either by a thematically (milk-cow) or a taxonomically (pig-cow) related prime compared to an unrelated condition (lemon-cow). The stimuli were controlled for lexical frequency, familiarity, age of acquisition and visual complexity. Within the framework of the extended sensory-functional theory, the sensory and motor properties of our targets will be investigated in order to explore the impact of those variables on the semantic processing. The protocol of our experiment as well as the preliminary results regarding the impact of the variables recruited on young adults’ semantic processing (study 1) will be presented. This abstract is part of an ARC (“Action de Recherche Concertée”) financed by the Ministry of the French Community of Belgium - General Direction of Non-Compulsory Education and Scientific Research (Reference: ARC-19/23 UMONS3). Aurélie Miceli Doctorante Université de Mons Service de Psychologie Cognitive et Neuropsychologie Place du Parc, 18 7000 Mons http://www.umons.ac.be/neuropsychologie aurelie.miceli@umons.ac.be<mailto:aurelie.miceli@umons.ac.be>