Cited by 938Functional Brain Connectivity StudiesAdvanced MRI Techniques and ApplicationsNeural dynamics and brain function

Investigating the electrophysiological basis of resting state networks using magnetoencephalography

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Brookes, Matthew J., Woolrich, Mark, Luckhoo, Henry, Price, Darren, Hale, Joanne R., Stephenson, Mary C., Barnes, Gareth R., Smith, Stephen M. +1 more·2011·Proceedings of the National Academy of Sciences

Abstract

In recent years the study of resting state brain networks (RSNs) has become an important area of neuroimaging. The majority of studies have used functional magnetic resonance imaging (fMRI) to measure temporal correlation between blood-oxygenation-level–dependent (BOLD) signals from different brain areas. However, BOLD is an indirect measure related to hemodynamics, and the electrophysiological basis of connectivity between spatially separate network nodes cannot be comprehensively assessed using this technique. In this paper we describe a means to characterize resting state brain networks independently using magnetoencephalography (MEG), a neuroimaging modality that bypasses the hemodynamic response and measures the magnetic fields associated with electrophysiological brain activity. The MEG data are analyzed using a unique combination of beamformer spatial filtering and independent component analysis (ICA) and require no prior assumptions about the spatial locations or patterns of the networks. This method results in RSNs with significant similarity in their spatial structure compared with RSNs derived independently using fMRI. This outcome confirms the neural basis of hemodynamic networks and demonstrates the potential of MEG as a tool for understanding the mechanisms that underlie RSNs and the nature of connectivity that binds network nodes.

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  1. Robinson S, Vrba J (1998) Functional neuroimaging by synthetic aperture magne- tometry. Recent Advances in Biomagnetism, eds Yoshimoto T, Kotani M, Kuriki S, Karibe H, Nakasato N (Tohoku Univ Press, Sendai, Japan), pp 302-305.

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Authors
Brookes, M. J., Woolrich, M., Luckhoo, H., Price, D., Hale, J. R., Stephenson, M. C., Barnes, G. R., Smith, S. M., & Morris, P. G.
Affiliations
  • University of Nottingham (GB)
  • Warneford Hospital (GB)
  • Wellcome Centre for Human Neuroimaging (GB)
  • John Radcliffe Hospital (GB)
Venue
Proceedings of the National Academy of Sciences
Published
2011-09-19
Volume
108
Issue
40
Pages
16783-16788
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2122418437
Cited by
938
References
32
Citations by year
2026: 33 · 2025: 36 · 2024: 60 · 2023: 58 · 2022: 72 · 2021: 68 · 2020: 91 · 2019: 85 · 2018: 74 · 2017: 64 · 2016: 67 · 2015: 66 · 2014: 73 · 2013: 57 · 2012: 31
FWCI
26.48
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • Wellcome Trust
  • Leverhulme Trust
  • University College London
  • University of Nottingham
  • Medical Research Council
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
resting-state networks, magnetoencephalography, independent component analysis, BOLD signal, functional connectivity
MeSH terms
Brain, Electrophysiology, Hemodynamics, Humans, Membrane Potentials, Models, Biological, Nerve Net, Magnetoencephalography

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