Document Detail


Broca's area and the hierarchical organization of human behavior.
MedLine Citation:
PMID:  16772176     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The prefrontal cortex subserves executive control, i.e., the organization of action or thought in relation to internal goals. This brain region hosts a system of executive processes extending from premotor to the most anterior prefrontal regions that governs the temporal organization of behavior. Little is known, however, about the prefrontal executive system involved in the hierarchical organization of behavior. Here, we show using magnetic resonance imaging in humans that the posterior portion of the prefrontal cortex, including Broca's area and its homolog in the right hemisphere, contains a system of executive processes that control start and end states and the nesting of functional segments that combine in hierarchically organized action plans. Our results indicate that Broca's area and its right homolog process hierarchically structured behaviors regardless of their temporal organization, suggesting a fundamental segregation between prefrontal executive systems involved in the hierarchical and temporal organization of goal-directed behaviors.
Authors:
Etienne Koechlin; Thomas Jubault
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuron     Volume:  50     ISSN:  0896-6273     ISO Abbreviation:  Neuron     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-06-14     Completed Date:  2006-07-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8809320     Medline TA:  Neuron     Country:  United States    
Other Details:
Languages:  eng     Pagination:  963-74     Citation Subset:  IM    
Affiliation:
Institut National de la Santé et de la Recherche Médicale, Université Pierre et Marie Curie, 9, quai St Bernard, 75005 Paris, France. koechlin@ccr.jussieu.fr
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MeSH Terms
Descriptor/Qualifier:
Adult
Behavior / physiology*
Brain Mapping / methods*
Frontal Lobe / physiology*
Humans
Models, Neurological*
Psychomotor Performance / physiology
Reaction Time / physiology

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