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Motor contribution to auditory temporal predictions| old_uid | 18540 |
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| title | Motor contribution to auditory temporal predictions |
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| start_date | 2020/11/26 |
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| schedule | 09h-11h |
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| online | no |
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| location_info | salle des colloques |
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| details | Thème : Prévoir les actes de parole, comprendre les comportements rythmiques.
Si vous souhaitez y assister, une inscription est nécessaire sur le lien suivant https://inscription-evenement.univ-lille.fr/PSAURB2020/. L’inscription est gratuite.
Si vous souhaitez plus d’informations, vous pouvez contacter les organisateurs à l’adresse suivante : angele.brunelliere@univ-lille.fr |
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| summary | Temporal predictions are fundamental instruments for facilitating sensory selection, allowing humans to exploit regularities in the world. Recent evidence indicates that the motor system instantiates predictive timing mechanisms, helping to synchronize temporal fluctuations of attention with the timing of events in a task-relevant stream, thus facilitating sensory selection. Accordingly, in the auditory domain auditory-motor interactions are observed during perception of speech and music, two temporally structured sensory streams. I will present a behavioral and neurophysiological account for this theory and will detail the parameters governing the emergence of this auditory-motor coupling, through a set of behavioral and magnetoencephalography (MEG) experiments.
I will first review the prominence of delta (~2 Hz) oscillatory rhythms in the motor cortex and show that they constraint the interaction between motor and auditory systems. At this rate –and this rate only– overt rhythmic movements sharpen the temporal selection of auditory stimuli, thereby improving performance. I will next show that the implication of the motor system during auditory perception depends also on the temporal predictability of the sensory stream. Behaviorally, the feeling of groove induced by a melody –i.e. the wanting to move during passive listening– strongly depends on its temporal predictability. MEG results reveal that auditory and motor regions have a distinctive sensitivity to auditory temporal dynamics, with motor areas being more flexible in their ability to track temporal information. Together, these findings are compatible with active sensing theories, emphasizing the prominent role of motor areas in sensory processing, which are notably implicated in the analysis of contextual temporal information. |
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| responsibles | Fournier |
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