Journal article 782 views 36 downloads
Energy landscape of resting magnetoencephalography reveals fronto-parietal network impairments in epilepsy
,
Naoki Masuda ,
Khalid Hamandi ,
Krish D. Singh ,
Bethany Routley,
Jiaxiang Zhang
Network Neuroscience, Volume: 4, Issue: 2, Pages: 374 - 396
Swansea University Author:
Jiaxiang Zhang
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© 2020 Massachusetts Institute of Technology Published under a Creative Commons Attribution 4.0 International (CC BY 4.0) license
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DOI (Published version): 10.1162/netn_a_00125
Abstract
Juvenile myoclonic epilepsy (JME) is a form of idiopathic generalized epilepsy. It is yet unclear to what extent JME leads to abnormal network activation patterns. Here, we characterized statistical regularities in magnetoencephalograph (MEG) resting-state networks and their differences between JME...
| Published in: | Network Neuroscience |
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| ISSN: | 2472-1751 |
| Published: |
MIT Press - Journals
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa61206 |
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| Abstract: |
Juvenile myoclonic epilepsy (JME) is a form of idiopathic generalized epilepsy. It is yet unclear to what extent JME leads to abnormal network activation patterns. Here, we characterized statistical regularities in magnetoencephalograph (MEG) resting-state networks and their differences between JME patients and controls by combining a pairwise maximum entropy model (pMEM) and novel energy landscape analyses for MEG. First, we fitted the pMEM to the MEG oscillatory power in the front-oparietal network (FPN) and other resting-state networks, which provided a good estimation of the occurrence probability of network states. Then, we used energy values derived from the pMEM to depict an energy landscape, with a higher energy state corresponding to a lower occurrence probability. JME patients showed fewer local energy minima than controls and had elevated energy values for the FPN within the theta, beta, and gamma bands. Furthermore, simulations of the fitted pMEM showed that the proportion of time the FPN was occupied within the basins of energy minima was shortened in JME patients. These network alterations were highlighted by significant classification of individual participants employing energy values as multivariate features. Our findings suggested that JME patients had altered multistability in selective functional networks and frequency bands in the fronto-parietal cortices. |
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| Keywords: |
Maximum entropy model, MEG, Energy landscape, Resting-state networks, Juvenile myoclonic epilepsy |
| College: |
Faculty of Science and Engineering |
| Funders: |
Krish D. Singh, Medical Research Council (http://dx.doi.org/10.13039/501100000265), Award
ID: MR/K005464/1. Dominik Krzeminski, Engineering and Physical Sciences Research Coun- ´
cil (http://dx.doi.org/10.13039/501100000266), Award ID: EP/N509449/1. Jiaxiang Zhang,
European Research Council, Award ID: 716321. Bethany Routley, Medical Research Council (http://dx.doi.org/10.13039/501100000265), Award ID: MR/K501086/1. Khalid Hamandi,
Health Care Research Wales. |
| Issue: |
2 |
| Start Page: |
374 |
| End Page: |
396 |