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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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Connections of orbital cortex

Connections of orbital cortex

Chapter:
(p.39) Chapter 3 Connections of orbital cortex
Source:
The Orbitofrontal Cortex
Author(s):

Joseph L. Price

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198565741.003.0003

This chapter describes the connections of the orbital and medial prefrontal cortex. Intrinsic connections indicate the presence of distinct orbital and medial networks, with the orbital network concentrated in central OFC subregions, and the medial network involving medial structures, and some areas on the medial and lateral orbital surface. The medial and orbital networks show strikingly differential patterns of input and output. The orbital network receives substantial input from sensory systems including olfaction, taste, visceral, visual, and somatosensory systems, and may serve to assess sensory objects, especially food. The medial network has little direct sensory input, but provides output to the hypothalamus and periaqueductal gray, and is heavily connected with limbic regions such as the amygdala, entorhinal cortex, and hippocampus. The medial and orbital networks are also connected to distinct parts of the striatum and mediodorsal thalamic nucleus.

Keywords:   amygdala, entorhinal cortex, hippocampus, hypothalamus, limbic, network, projections, sensory, thalamus

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