Cited by 2,614Functional Brain Connectivity StudiesAdvanced MRI Techniques and ApplicationsAdvanced Neuroimaging Techniques and Applications

Regional homogeneity approach to fMRI data analysis.

Zang, Yufeng, Jiang, Tianzi, Lu, Yingli, He, Yong, Tian, Lixia·2004·NeuroImage

Abstract

Kendall's coefficient concordance (KCC) can measure the similarity of a number of time series. It has been used for purifying a given cluster in functional MRI (fMRI). In the present study, a new method was developed based on the regional homogeneity (ReHo), in which KCC was used to measure the similarity of the time series of a given voxel to those of its nearest neighbors in a voxel-wise way. Six healthy subjects performed left and right finger movement tasks in event-related design; five of them were additionally scanned in a rest condition. KCC was compared among the three conditions (left finger movement, right finger movement, and the rest). Results show that bilateral primary motor cortex (M1) had higher KCC in either left or right finger movement condition than in rest condition. Contrary to prediction and to activation pattern, KCC of ipsilateral M1 is significantly higher than contralateral M1 in unilateral finger movement conditions. These results support the previous electrophysiologic findings of increasing ipsilateral M1 excitation during unilateral movement. ReHo can consider as a complementary method to model-driven method, and it could help reveal the complexity of the human brain function. More work is needed to understand the neural mechanism underlying ReHo.

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Crossref · 10.1016/j.neuroimage.2003.12.030

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Authors
Zang, Y., Jiang, T., Lu, Y., He, Y., & Tian, L.
Affiliations
Chinese Academy of Sciences (CN)
Corresponding author
Jiang, Tianzi
Venue
NeuroImage
Publisher
Elsevier BV
Published
2004-05
Volume
22
Issue
1
Pages
394-400
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2007213925
Cited by
2,614
References
34
Citations by year
2026: 156 · 2025: 237 · 2024: 241 · 2023: 231 · 2022: 247 · 2021: 238 · 2020: 178 · 2019: 156 · 2018: 151 · 2017: 172 · 2016: 133 · 2015: 126 · 2014: 85 · 2013: 84 · 2012: 66
FWCI
3.19
Type
journal article
Language
en
Open access
closed
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repository of Institute of Psychology, Chinese Academy of Sciences (Institute of Psychology, Chinese Academy of Sciences) (submittedVersion)
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
regional homogeneity, Kendall's coefficient of concordance, fMRI data analysis, primary motor cortex, finger movement, event-related design, brain activation patterns
MeSH terms
Adult, Brain Mapping, Data Interpretation, Statistical, Female, Fingers, Humans, Image Processing, Computer-Assisted, Functional Laterality, Magnetic Resonance Imaging, Male, Motor Cortex, Movement, Cluster Analysis, Linear Models

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