Cited by 139Functional Brain Connectivity StudiesAdvanced MRI Techniques and ApplicationsBlind Source Separation Techniques

Group independent component analysis reveals consistent resting-state networks across multiple sessions

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Chen, Sharon, Ross, Thomas J., Zhan, Wang, Myers, Carol S., Chuang, Keh-Shih, Heishman, Stephen J., Stein, Elliot A., Yang, Yihong·2008·Brain Research

Abstract

Group independent component analysis (gICA) was performed on resting-state data from 14 healthy subjects scanned on 5 fMRI scan sessions across 16 days. The data were reduced and aggregated in 3 steps using Principal Components Analysis (PCA, within scan, within session and across session) and subjected to gICA procedures. The amount of reduction was estimated by an improved method that utilizes a first-order autoregressive fitting technique to the PCA spectrum. Analyses were performed using all sessions in order to maximize sensitivity and alleviate the problem of component identification across session. Across-session consistency was examined by three methods, all using back-reconstruction of the single-session or single-subject/session maps from the grand (5-session) maps. The gICA analysis produced 55 spatially independent maps. Obvious artifactual maps were eliminated and the remainder were grouped based upon physiological recognizability. Biologically relevant component maps were found, including sensory, motor and a 'default-mode' map. All analysis methods showed that components were remarkably consistent across session. Critically, the components with the most obvious physiological relevance were the most consistent. The consistency of these maps suggests that, at least over a period of several weeks, these networks would be useful to follow longitudinal treatment-related manipulations.

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Crossref · 10.1016/j.brainres.2008.08.028

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  • Unsupervised dimensionality reduction performed in the combined training and test datasets prior to prediction constitutes leakage.

    “Various forms of unsupervised dimensionality reduction, such as independent component analysis62,63, are popular in neuroimaging and constitute leakage if performed in the combined training and test datasets prior to performing prediction.”

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Authors
Chen, S., Ross, T. J., Zhan, W., Myers, C. S., Chuang, K.-S., Heishman, S. J., Stein, E. A., & Yang, Y.
Affiliations
  • National Institutes of Health (US)
  • Kaohsiung Medical University (TW)
Corresponding author
Yang, Yihong
Venue
Brain Research
Publisher
Elsevier BV
Published
2008-11
Volume
1239
Pages
141-151
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2018634603
Cited by
139
References
45
Citations by year
2025: 1 · 2024: 2 · 2023: 5 · 2022: 4 · 2021: 18 · 2020: 4 · 2019: 6 · 2018: 9 · 2017: 9 · 2016: 7 · 2015: 7 · 2014: 10 · 2013: 13 · 2012: 12
FWCI
5.51
Type
journal article
Language
en
Open access
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (Z99 DA999999)
  • National Institute on Drug Abuse (Z01DA000469)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Physical Sciences › Computer Science › Signal Processing › Blind Source Separation Techniques
Keywords
group independent component analysis, resting-state fMRI, functional brain networks, default mode network
MeSH terms
Adult, Analysis of Variance, Brain, Humans, Magnetic Resonance Imaging, Male, Neural Pathways, Sensitivity and Specificity, Signal Processing, Computer-Assisted, Time Factors, Models, Statistical, Principal Component Analysis

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