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The relationship of anatomical and functional connectivity to resting state connectivity in primate somatosensory cortex

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The relationship of anatomical and functional connectivity to resting state connectivity in primate somatosensory cortex

Auteurs : Zheng Wang [États-Unis] ; Li Min Chen [États-Unis] ; Lászl Négyessy [Hongrie] ; Robert M. Friedman [États-Unis] ; Arabinda Mishra [États-Unis] ; John C. Gore [États-Unis] ; Anna W. Roe [États-Unis]

Source :

Neuron [ 0896-6273 ] ; 2013.

RBID : PMC:3723346

Abstract

SUMMARY

Studies of resting state activity in the brain have provoked critical questions about the brain’s functional organization but, its biological basis is not clear. Specifically, the relationships between interregional correlations in resting state measures of activity, neuronal functional connectivity and anatomical connectivity are much debated. To investigate these relationships, we have examined both anatomical and steady state functional connectivity within the hand representation of primary somatosensory cortex (areas 3b and 1) in anesthetized squirrel monkeys. The comparison of three data sets (fMRI, electrophysiological, anatomical) indicate two primary axes of information flow within SI: prominent interdigit interactions within area 3b and predominantly homotopic interactions between area 3b and area 1. These data support a strikingly close relationship between baseline functional connectivity and anatomical connections. This study is also the first to extend findings derived from large-scale cortical networks to the realm of local mm-scale networks.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3723346

DOI: 10.1016/j.neuron.2013.04.023
PubMed: 23791200
PubMed Central: 3723346

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PMC:3723346

Le document en format XML

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<p id="P3">Studies of resting state activity in the brain have provoked critical questions about the brain’s functional organization but, its biological basis is not clear. Specifically, the relationships between interregional correlations in resting state measures of activity, neuronal functional connectivity and anatomical connectivity are much debated. To investigate these relationships, we have examined both anatomical and steady state functional connectivity within the hand representation of primary somatosensory cortex (areas 3b and 1) in anesthetized squirrel monkeys. The comparison of three data sets (fMRI, electrophysiological, anatomical) indicate two primary axes of information flow within SI: prominent interdigit interactions within area 3b and predominantly homotopic interactions between area 3b and area 1. These data support a strikingly close relationship between baseline functional connectivity and anatomical connections. This study is also the first to extend findings derived from large-scale cortical networks to the realm of local mm-scale networks.</p>
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The relationship of anatomical and functional connectivity to resting state connectivity in primate somatosensory cortex

The relationship of anatomical and functional connectivity to resting state connectivity in primate somatosensory cortex

Source :

Abstract

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