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L'architecture fonctionnelle intégrant le contrôle cognitif et le contrôle motivationnel dans le cortex préfrontal humain.

Abstract : The prefrontal cortex subserves executive function, the high-level cognitive ability that allows humans to generate behavior which does not depend only on external stimuli but also on internal goals. In this thesis we investigate the interaction between cognitive and motivational processes involved in executive function. We propose that the key concept to understand the functional architecture of lateral and medial prefrontal cortices is time-scale of information integration, which drives the fractionation of control processes along a caudo-rostral axis. Accordingly, posterior prefrontal regions drive immediate behavior adaptation on the basis of information conveyed by a stimulus and its context. Middle prefrontal regions are involved in maintaining over a series of trials a set of behavioural rules and processing their associated values. During a cognitive branching, the left and right medial prefrontal cortices can separately encode the values associated with delayed and ongoing task. The frontopolar region integrates these values and controls dual-task performance. Thus the functional properties of frontopolar and medial prefrontal cortices, despite being limited to the processing of two concurrent tasks, may play a critical role in the ability to generate complex behavior by coordinating ongoing task and future goals.
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https://pastel.archives-ouvertes.fr/pastel-00651087
Contributor : Sylvain Charron <>
Submitted on : Tuesday, December 20, 2011 - 3:37:05 PM
Last modification on : Tuesday, October 20, 2020 - 10:53:45 AM
Long-term archiving on: : Monday, December 5, 2016 - 10:19:55 AM

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Sylvain Charron. L'architecture fonctionnelle intégrant le contrôle cognitif et le contrôle motivationnel dans le cortex préfrontal humain.. Neurosciences. Ecole Polytechnique X, 2011. Français. ⟨pastel-00651087⟩

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