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Analyse de scènes de parole multisensorielle : Mise en évidence et caractérisation d’un processus de liage audiovisuel préalable à la fusion.

Abstract : This thesis is focused on audiovisual speech, with the aim of better understanding the mechanisms enabling to link auditory and visual speech signals in the human brain.In a first theoretical part were view key issues concerning audiovisual speech and the underlying models of integration of auditory and visual inputs. Then we discuss the question of the existence of an early audio-visual integration stage and we formulate our main hypothesis in which we posit the existence of an “audiovisual binding process”, prior to audio- visual fusion.Based on this assumption the experimental work is organized in two parts. Firstly we provide evidence in favor of the existence of a binding process by developing and gradually refining a new experimental paradigm. Then we attempt to characterize this process by setting up a number of experiments studying the influence of various critical parameters. We finish with a discussion of our results and relate them to present questions about cognitive perceptual processing of audiovisual speech.
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https://tel.archives-ouvertes.fr/tel-01178397
Contributor : Olha Nahorna <>
Submitted on : Sunday, July 19, 2015 - 11:16:29 PM
Last modification on : Wednesday, October 7, 2020 - 11:40:13 AM
Long-term archiving on: : Tuesday, October 20, 2015 - 10:32:12 AM

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  • HAL Id : tel-01178397, version 1

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Olha Nahorna. Analyse de scènes de parole multisensorielle : Mise en évidence et caractérisation d’un processus de liage audiovisuel préalable à la fusion.. Sciences cognitives. Université de Grenoble, 2013. Français. ⟨tel-01178397⟩

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