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The integration of motivation and selection in human prefrontal cortex| old_uid | 10838 |
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| title | The integration of motivation and selection in human prefrontal cortex |
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| start_date | 2012/02/09 |
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| schedule | 11h30 |
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| online | no |
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| summary | The prefrontal cortex subserves executive function, the
high-level cognitive ability that allows humans to generate and adapt
behavior relatively to internal goals and external stimuli. Two key
component of the executive function are the selection of actions and the
motivational evaluation of those actions, respectively related to the
function of lateral and medial prefrontal cortices. We propose that the
functional organisation of cognitive and motivaional control relies on
the time-scale of information integration. 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
while the frontopolar region integrates these values and controls
dual-task performance. Thus the functional properties of frontopolar and
medial prefrontal cortices, despite imposing limitation on multitasking
behavior, may play a critical role in decision by coordinating ongoing
task and future goals. |
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| responsibles | Béranger |
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