Biomagnetic biomarkers for dementia: A pilot multicentre study with a recommended methodological framework for magnetoencephalography

the BioFIND Working Group

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16 Citations (Scopus)

Abstract

Introduction: An increasing number of studies are using magnetoencephalography (MEG) to study dementia. Here we define a common methodological framework for MEG resting-state acquisition and analysis to facilitate the pooling of data from different sites. Methods: Two groups of patients with mild cognitive impairment (MCI, n = 84) and healthy controls (n = 84) were combined from three sites, and site and group differences inspected in terms of power spectra and functional connectivity. Classification accuracy for MCI versus controls was compared across three different types of MEG analyses, and compared with classification based on structural MRI. Results: The spectral analyses confirmed frequency-specific differences in patients with MCI, both in power and connectivity patterns, with highest classification accuracy from connectivity. Critically, site acquisition differences did not dominate the results. Discussion: This work provides detailed protocols and analyses that are sensitive to cognitive impairment, and that will enable standardized data sharing to facilitate large-scale collaborative projects.

Original languageEnglish
Pages (from-to)450-462
Number of pages13
JournalAlzheimer's and Dementia: Diagnosis, Assessment and Disease Monitoring
Volume11
DOIs
Publication statusPublished - Dec 2019

Bibliographical note

Funding Information:
The authors would like to thank all the BioFIND members for their input, including Arjan Hillebrand, Alida Gouw, and Jyrki Makela. They thank Christophe Phillips for his help implementing MKL within the PRONTO toolbox. The study was funded by JPND “Harmonisation and Alignment in Brain Imaging Methods for Neurodegeneration” (MR/P502017/1). R.N.H. was additionally supported by MRC grant SUAG/010-RG91365; L.E.H. and J.B.R. were additionally supported by MRC grant SUAG/004-RG91365, the Cambridge NIHR Biomedical Research Centre and Wellcome Trust (103838) and the Dementias Platform UK. Cam-CAN data collection was supported by the Biotechnology and Biological Sciences Research Council (BB/H008217/1). A.J.Q. M.W.W. and A.C.N. are additionally supported by a NIHR Oxford Health Biomedical Research Centre and Wellcome Investigator Awards to MWW (106183/Z/14/Z) and ACN (104571/Z/14/Z), The Wellcome Centre for Integrative Neuroimaging is supported by core funding from the Wellcome Trust (203139/Z/16/Z).

Funding Information:
The authors would like to thank all the BioFIND members for their input, including Arjan Hillebrand, Alida Gouw, and Jyrki Makela. They thank Christophe Phillips for his help implementing MKL within the PRONTO toolbox. The study was funded by JPND “Harmonisation and Alignment in Brain Imaging Methods for Neurodegeneration” ( MR/P502017/1 ). R.N.H. was additionally supported by MRC grant SUAG/010-RG91365 ; L.E.H. and J.B.R. were additionally supported by MRC grant SUAG/004-RG91365 , the Cambridge NIHR Biomedical Research Centre and Wellcome Trust ( 103838 ) and the Dementias Platform UK. Cam-CAN data collection was supported by the Biotechnology and Biological Sciences Research Council ( BB/H008217/1 ). A.J.Q., M.W.W., and A.C.N. are additionally supported by a NIHR Oxford Health Biomedical Research Centre and Wellcome Investigator Awards to MWW (106183/Z/14/Z) and ACN (104571/Z/14/Z), The Wellcome Centre for Integrative Neuroimaging is supported by core funding from the Wellcome Trust ( 203139/Z/16/Z ).

Publisher Copyright:
© 2019 The Authors

Keywords

  • Functional connectivity
  • Harmonization
  • Magnetoencephalography
  • Mild cognitive impairment
  • Multi-site
  • Spectral analysis

ASJC Scopus subject areas

  • Clinical Neurology
  • Psychiatry and Mental health

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