Cited by 180Functional Brain Connectivity StudiesNeural dynamics and brain functionAdvanced Neuroimaging Techniques and Applications

How do brain tumors alter functional connectivity? A magnetoencephalography study

Bartolomei, Fabrice, Bosma, Ingeborg, Klein, Martin, Baayen, Johannes C., Reijneveld, Jaap C., Postma, Tjeerd J., Heimans, Jan J., van Dijk, Bob W. +4 more·2006·Annals of Neurology

Abstract

Objective: This study was undertaken to test the hypothesis that brain tumors interfere with normal brain function by disrupting functional connectivity of brain networks. Methods: Functional connectivity was assessed by computing the synchronization likelihood in a broad band (0.5–60Hz) or in the gamma band (30–60Hz) between all pairwise combinations of magnetoencephalography signals. Magnetoencephalography recordings were made at rest in 17 brain tumor patients and 15 healthy control subjects. For a given threshold of synchronization likelihood values, graphs of the suprathreshold connections between each magnetoencephalography channel and the others channels were built. Results: In some regions, a variable number of channels without connectivity (missing connective points) at this threshold was found. The number of missing connective points was higher in patients with brain tumors than in control subjects (p < 0.0001, broad and gamma band) and was higher for left‐sided than right‐sided tumors (p = 0.008, broad band; p < 0.0001, gamma band). Individual results analysis indicates that the majority of brain tumor patients display several regions with missing connective point alterations in the affected and in the contralateral hemisphere. Interpretation: Our findings suggest that brain tumors induce a loss of functional connectivity that affects multiple brain regions, and that left side brain tumors have the more severe consequences in this respect. Ann Neurol 2005

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Authors
Bartolomei, F., Bosma, I., Klein, M., Baayen, J. C., Reijneveld, J. C., Postma, T. J., Heimans, J. J., van Dijk, B. W., de Munck, J. C., de Jongh, A., Cover, K. S., & Stam, C. J.
Affiliations
  • Amsterdam UMC Location University of Amsterdam (NL)
  • Amsterdam UMC Location Vrije Universiteit Amsterdam (NL)
Venue
Annals of Neurology
Publisher
Wiley
Published
2005-12-22
Volume
59
Issue
1
Pages
128-138
ISSN
  • 0364-5134 (ISSN-L)
  • 1531-8249
OpenAlex
W2040080135
Cited by
180
References
39
Citations by year
2026: 8 · 2025: 5 · 2024: 8 · 2023: 9 · 2022: 6 · 2021: 9 · 2020: 8 · 2019: 7 · 2018: 9 · 2017: 13 · 2016: 9 · 2015: 10 · 2014: 10 · 2013: 12 · 2012: 14
FWCI
2.81
Type
journal article
Language
en
Open access
closed
Locations
  • Annals of Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
  • Pure Amsterdam UMC (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
brain tumors, functional connectivity, synchronization likelihood, gamma band, magnetoencephalography, brain network disruption, hemispheric lateralization, contralateral hemisphere
MeSH terms
Adult, Aged, Brain Neoplasms, Female, Humans, Male, Middle Aged, Nerve Net, Seizures, Magnetoencephalography

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