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Hierarchical disruption in the Bayesian brain: Focal epilepsy and brain networks

Omidvarnia, A; Pedersen, M; Rosch, RE; Friston, KJ; Jackson, GD; (2017) Hierarchical disruption in the Bayesian brain: Focal epilepsy and brain networks. NeuroImage: Clinical , 15 pp. 682-688. 10.1016/j.nicl.2017.05.019. Green open access

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Abstract

In this opinion paper, we describe a combined view of functional and effective brain connectivity along with the free-energy principle for investigating persistent disruptions in brain networks of patients with focal epilepsy. These changes are likely reflected in effective connectivity along the cortical hierarchy and construct the basis of increased local functional connectivity in focal epilepsy. We propose a testable framework based on dynamic causal modelling and functional connectivity analysis with the capacity of explaining commonly observed connectivity changes during interictal periods. We then hypothesise their possible relation with disrupted free-energy minimisation in the Bayesian brain. This may offer a new approach for neuroimaging to specifically develop and address hypotheses regarding the network pathomechanisms underlying epileptic phenotypes.

Type: Article
Title: Hierarchical disruption in the Bayesian brain: Focal epilepsy and brain networks
Location: Netherlands
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.nicl.2017.05.019
Publisher version: http://doi.org/10.1016/j.nicl.2017.05.019
Language: English
Additional information: © 2017 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
Keywords: Bayesian inference, Effective connectivity, Focal epilepsy, Free-energy principle, Functional connectivity, Predictive coding
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Imaging Neuroscience
URI: http://discovery.ucl.ac.uk/id/eprint/1562841
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