A1 Journal article (refereed)
Tensor clustering on outer-product of coefficient and component matrices of independent component analysis for reliable functional magnetic resonance imaging data decomposition (2019)
Hu, G., Zhang, Q., Waters, A. B., Li, H., Zhang, C., Wu, J., Cong, F., & Nickerson, L. D. (2019). Tensor clustering on outer-product of coefficient and component matrices of independent component analysis for reliable functional magnetic resonance imaging data decomposition. Journal of Neuroscience Methods, 325, Article 108359. https://doi.org/10.1016/j.jneumeth.2019.108359
JYU authors or editors
Publication details
All authors or editors: Hu, Guoqiang; Zhang, Qing; Waters, Abigail B.; Li, Huanjie; Zhang, Chi; Wu, Jianlin; Cong, Fengyu; Nickerson, Lisa D.
Journal or series: Journal of Neuroscience Methods
ISSN: 0165-0270
eISSN: 1872-678X
Publication year: 2019
Volume: 325
Article number: 108359
Publisher: Elsevier BV
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.jneumeth.2019.108359
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65140
Abstract
New method. The current study aims to (1) develop an algorithm to incorporate temporal course stability into dimensionality selection and (2) test the impact of temporal course on the stability of the ICA decomposition of fMRI data via tensor clustering. Resting state fMRI data were analyzed with two popular ICA algorithms, InfomaxICA and FastICA, using our new method and results were compared with model order selection based on spatial or temporal criteria alone.
Results. Hierarchical clustering indicated that the stability of the ICA decomposition incorporating spatiotemporal tensor information performed similarly when compared to current best practice. However, we found that component spatiotemporal stability and convergence of the model varied significantly with model order. Considering both may lead to methodological improvements for determining ICA model order. Selected components were also significantly associated with relevant behavioral variables.
Comparison with Existing Method: The Kullback–Leibler information criterion algorithm suggests the optimal model order for group ICA is 40, compared to the proposed method with an optimal model order of 20.
Conclusion. The current study sheds new light on the importance of temporal course variability in ICA of fMRI data.
Keywords: functional magnetic resonance imaging; signal analysis
Free keywords: independent component analysis (ICA); fMRI; tensor clustering; stability; model order
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2019
JUFO rating: 1