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  Brain Hemispheric Structural Efficiency and Interconnectivity Rightward Asymmetry in Human and Nonhuman Primates

Itturia-Medina, Y., Fernandez, A., Morris, D., Canales-Rodriguez, E., Haroon, H., Penton, L., et al. (2011). Brain Hemispheric Structural Efficiency and Interconnectivity Rightward Asymmetry in Human and Nonhuman Primates. Cerebral Cortex, 21(1), 56-67. doi:10.1093/cercor/bhq058.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BCC0-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-BCD4-C
Genre: Journal Article

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Itturia-Medina, Y, Author
Fernandez, AP, Author
Morris, DM, Author
Canales-Rodriguez , EJ, Author
Haroon, HA, Author
Penton, LG, Author
Augath, M1, 2, Author              
Garcia, LG, Author
Logothetis, NK1, 2, Author              
Parker, GJM, Author
Melie-Garcia, L, Author
Affiliations:
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, ou_1497794              

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 Abstract: Evidences of inter-regional structural asymmetries have been previously reported for brain anatomic regions supporting well described functional lateralization. Here we aimed to investigate whether the two brain hemispheres demonstrate dissimilar general structural attributes implying different principles on information flow management. Common left/right hemisphere structural network properties are estimated and compared for right-handed healthy human subjects and a non-human primate, by means of three different probabilistic diffusionweighted MRI fiber tractography algorithms and a graph theory framework. In both the human and non-human primate the data support the conclusion that the right hemisphere is significantly more efficient and interconnected than the left hemisphere, whereas the left hemisphere presents more indispensable regions for the whole brain structural network than the right hemisphere. In terms of functional principles, this pattern could be related with the fact that the left hemisphere has a leading role for highly demanding specific process, such as language, which may require dedicated specialized networks, whereas the right hemisphere has a leading role for more general process, such as integration tasks, which may require a more general level of interconnection.

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 Dates: 2011-01
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1093/cercor/bhq058
BibTex Citekey: 6106
 Degree: -

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Title: Cerebral Cortex
Source Genre: Journal
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Publ. Info: New York, NY : Oxford University Press
Pages: - Volume / Issue: 21 (1) Sequence Number: - Start / End Page: 56 - 67 Identifier: ISSN: 1047-3211
CoNE: https://pure.mpg.de/cone/journals/resource/954925592440