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  Modular architectonic organization of the insula in the macaque monkey

Evrard, H., Logothetis, N., & (Bud) Craig, A. (2014). Modular architectonic organization of the insula in the macaque monkey. Journal of Comparative Neurology, 522(1), 64-97. doi:10.1002/cne.23436.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-8077-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-2C3B-D
Genre: Journal Article

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Evrard, HC1, 2, Author              
Logothetis, NK1, 2, Author              
(Bud) Craig, AD, Author
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1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: In order to provide a framework for ongoing analyses of the neuronal connections of the insular cortex of the macaque monkey using modern high-resolution methods, we examined its anatomical organization in serial coronal sections stained alternately with Nissl and Gallyas (myelin) techniques. We observed the same 15 distinct architectonic areas in 10 brains. Within the granular, dysgranular, and agranular regions described in prior studies, we identified 4, 4, and 7 distinct areas, respectively. Across brains, these areas have consistent architectonic characteristics, and in flat map reconstructions they display a consistent topological or neighborhood arrangement, despite variations in the size of individual areas between cases. The borders between areas are generally rather sharply defined. Some areas, in particular the dysgranular areas, appear to consistently contain subtle transitions that suggest possible sub-areas or modules within the well-delimited areas. The presence of a distinct granular area that straddles the fundus of the superior limiting sulcus over its entire posterior-to-anterior extent is consistent with the available evidence on interoceptive thalamo-cortical projections, and also with the tensile anchor theory of species-specific cortical gyrification. These observations are consonant with the homeostatic afferent model of processing in the primate insula, and they suggest that discrete modules within insular cortex provide the basis for its polymodal integration of all salient activity relevant to ongoing emotional behavior.

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 Dates: 2014-01
 Publication Status: Published in print
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 Identifiers: DOI: 10.1002/cne.23436
BibTex Citekey: EvrardLB2013
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Title: Journal of Comparative Neurology
Source Genre: Journal
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Pages: - Volume / Issue: 522 (1) Sequence Number: - Start / End Page: 64 - 97 Identifier: -