A structured connectionist model of rostrolateral prefrontal cortex
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1
University of California, United States
Within the domains of reasoning and working memory, there is mounting evidence that the functional organization of lateral prefrontal cortex (PFC) depends, at least in part, on the complexity of information being processed. It has been demonstrated repeatedly that ventrolateral PFC is involved in the maintenance and processing of individual items, while dorsolateral PFC is involved in the maintenence and processing of relations. Previous modeling work has shown how these separate processes might be implemented in neural circuits. Now there is strong evidence that a third subregion, rostrolateral PFC, supports processing of second-order relations (relations of relations). Here we extend the earlier structured connectionist model to demonstrate how three subregions or lateral PFC --ventral, dorsal, and rostral --work together to support a full gamut of relational processing tasks. Key to the model is the idea that temporal synchrony is utilized in the brain as a mechanism of variable binding, and that synchrony at different timescales is necessary to support simultaneous processing of items, relations, and second-order relations.
Conference:
The 20th Annual Rotman Research Institute Conference, The frontal lobes, Toronto, Canada, 22 Mar - 26 Mar, 2010.
Presentation Type:
Poster Presentation
Topic:
Abstracts
Citation:
Bunge
S and
Wendelken
C
(2010). A structured connectionist model of rostrolateral prefrontal cortex.
Conference Abstract:
The 20th Annual Rotman Research Institute Conference, The frontal lobes.
doi: 10.3389/conf.fnins.2010.14.00097
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Received:
29 Jun 2010;
Published Online:
29 Jun 2010.
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Correspondence:
Carter Wendelken, University of California, Berkeley, United States, cwendelken@berkeley.edu