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How does sense emerge in the visual system? The cognitive visual system explored from categories to consciousness

Abstract : How does sense emerges in the visual system? In this thesis we will be focused on the visual system of human and non-human primates and their large capacity of extract and represent visual information. We studied several levels of visual representations from those related to the extraction of coarse visual features to the emergence of conscious visual representations. This manuscript presents six works in which we explored: (1) the visual features necessary to perform ultra-rapid visual categorization in monkeys and humans using psychophysics, (2) the spatio-temporal dynamics of visual attention in humans using psychophysics, (3) the neural correlates of high-level visual representations using EEG tanks to the development of an innovative technique called SWIFT, (4) the neural correlates of visual consciousness under binocular rivalry using EEG, (5) the synchrony of brain signals as a function of conscious recognition using intracranial electrodes implanted in epileptic patients and (6) the neural correlates associated with conscious perception in monkeys using intracranial electrodes. The results of these works allowed outlining a tentative model of visual perception aimed to dissociate attention and consciousness.
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https://tel.archives-ouvertes.fr/tel-00736494
Contributor : Catherine Marlot <>
Submitted on : Friday, September 28, 2012 - 12:24:22 PM
Last modification on : Monday, October 19, 2020 - 11:06:03 AM
Long-term archiving on: : Saturday, December 29, 2012 - 5:25:14 AM

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  • HAL Id : tel-00736494, version 1

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Roger Koenig. How does sense emerge in the visual system? The cognitive visual system explored from categories to consciousness. Neurons and Cognition [q-bio.NC]. Université Paul Sabatier - Toulouse III, 2012. English. ⟨tel-00736494⟩

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