Cited by 1,808Functional Brain Connectivity StudiesAdvanced MRI Techniques and ApplicationsAdvanced Neuroimaging Techniques and Applications

Time–frequency dynamics of resting-state brain connectivity measured with fMRI

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Chang, Catie, Glover, Gary H.·2010·NeuroImage

Abstract

Most studies of resting-state functional connectivity using fMRI employ methods that assume temporal stationarity, such as correlation and data-driven decompositions computed across the duration of the scan. However, evidence from both task-based fMRI studies and animal electrophysiology suggests that functional connectivity may exhibit dynamic changes within time scales of seconds to minutes. In the present study, we investigated the dynamic behavior of resting-state connectivity across the course of a single scan, performing a time-frequency coherence analysis based on the wavelet transform. We focused on the connectivity of the posterior cingulate cortex (PCC), a primary node of the default-mode network, examining its relationship with both the "anticorrelated" ("task-positive") network as well as other nodes of the default-mode network. It was observed that coherence and phase between the PCC and the anticorrelated network was variable in time and frequency, and statistical testing based on Monte Carlo simulations revealed the presence of significant scale-dependent temporal variability. In addition, a sliding-window correlation procedure identified other regions across the brain that exhibited variable connectivity with the PCC across the scan, which included areas previously implicated in attention and salience processing. Although it is unclear whether the observed coherence and phase variability can be attributed to residual noise or modulation of cognitive state, the present results illustrate that resting-state functional connectivity is not static, and it may therefore prove valuable to consider measures of variability, in addition to average quantities, when characterizing resting-state networks.

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Authors
Chang, C., & Glover, G. H.
Affiliations
Stanford Medicine (US)
Corresponding author
Chang, Catie
Venue
NeuroImage
Publisher
Elsevier BV
Published
2010-03
Volume
50
Issue
1
Pages
81-98
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2037035617
Cited by
1,808
References
74
Citations by year
2026: 65 · 2025: 119 · 2024: 98 · 2023: 122 · 2022: 132 · 2021: 166 · 2020: 148 · 2019: 155 · 2018: 147 · 2017: 151 · 2016: 96 · 2015: 105 · 2014: 105 · 2013: 93 · 2012: 54
FWCI
16.78
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
NIH (F31-AG032168, P41-RR009784)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
resting-state functional connectivity, dynamic functional connectivity, time-frequency coherence, posterior cingulate cortex, default mode network, task-positive network, wavelet coherence, sliding window correlation, temporal stationarity, salience processing
MeSH terms
Adult, Algorithms, Brain, Brain Mapping, Computer Simulation, Female, Gyrus Cinguli, Humans, Magnetic Resonance Imaging, Male, Monte Carlo Method, Motion, Neural Pathways, Respiration, Signal Processing, Computer-Assisted, Time Factors

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