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The Orbitofrontal Cortex$
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David Zald and Scott Rauch

Print publication date: 2006

Print ISBN-13: 9780198565741

Published to Oxford Scholarship Online: February 2010

DOI: 10.1093/acprof:oso/9780198565741.001.0001

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From associations to expectancies: orbitofrontal cortex as gateway between the limbic system and representational memory

From associations to expectancies: orbitofrontal cortex as gateway between the limbic system and representational memory

Chapter:
(p.199) Chapter 8 From associations to expectancies: orbitofrontal cortex as gateway between the limbic system and representational memory
Source:
The Orbitofrontal Cortex
Author(s):

Matthew Roesch

Geoffrey Schoenbaum

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198565741.003.0008

This chapter describes the role of the rodent orbitofrontal cortex (OFC) in the control of associative information and its application to govern behavior. Recent findings support a critical role for OFC in affective processing as part of a circuit that includes the amygdala and other limbic structures. It is argued that the OFC allows associative information, particularly information about the value of likely outcomes, to be manipulated in representational memory and integrated with non-associative variables concerning subsequent behavior, current context and internal state. The resultant ‘expectancies’ then influence processing in downstream limbic areas as well as other prefrontal regions, thereby promoting voluntary, cognitive, and goal-directed behavior and facilitating new learning.

Keywords:   amygdala, rodent, reward, expectancy, association, learning, lesion, neurophysiology

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