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INFLUENCE DE LA TÂCHE SUR LE TRAITEMENT DES SCÈNES VISUELLES COMPLEXES : UNE MODÉLISATION DES NIVEAUX DE REPRÉSENTATION

Abstract : This thesis examines how goals of task influence visual representations of scenes. We first investigated whether task-relevance and semantic-interest of visual information could influence visual representations of natural scenes. Results indicated that task-relevant information is extracted from the visual scene, processed and represented in memory more accurately than information of semantic interest. Results also provide arguments in favour of task-relevant information being coded within a task-related level whatever semantic interest. Secondly, we investigated the detailed rules for the task-related level of representation of visual scenes. Results indicated that task-related levels of representation are dynamic and code the information relevant to the demands of the current task. Then, this thesis provides a multinomial model of task influence on visual representation of scenes. The model aims to disentangle the amount of visual information that is extracted, processed and represented in memory when observers have to perform a task on visual scenes. Tested and validated with empirical data, the model shows that visual representations of scenes involve the visual information that is (i) relevant to the task (ii) directly relevant and necessary to the current task demands.
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https://tel.archives-ouvertes.fr/tel-00011364
Contributor : Emmanuelle Boloix <>
Submitted on : Thursday, January 12, 2006 - 1:32:31 PM
Last modification on : Tuesday, October 20, 2020 - 3:10:26 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 4:37:31 PM

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Emmanuelle Boloix. INFLUENCE DE LA TÂCHE SUR LE TRAITEMENT DES SCÈNES VISUELLES COMPLEXES : UNE MODÉLISATION DES NIVEAUX DE REPRÉSENTATION. domain_other. Université de Provence - Aix-Marseille I, 2005. Français. ⟨tel-00011364⟩

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