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A space affine matching approach to fMRI time series analysis
Chen L.5; Zhang W.5; Liu H.5; Feng S.5; Chen C.L.P.4; Wang H.3
2016-07-01
Source PublicationIEEE Transactions on Nanobioscience
ISSN15361241
Volume15Issue:5Pages:468-480
AbstractFor fMRI time series analysis, an important challenge is to overcome the potential delay between hemodynamic response signal and cognitive stimuli signal, namely the same frequency but different phase (SFDP) problem. In this paper, a novel space affine matching feature is presented by introducing the time domain and frequency domain features. The time domain feature is used to discern different stimuli, while the frequency domain feature to eliminate the delay. And then we propose a space affine matching (SAM) algorithm to match fMRI time series by our affine feature, in which a normal vector is estimated using gradient descent to explore the time series matching optimally. The experimental results illustrate that the SAM algorithm is insensitive to the delay between the hemodynamic response signal and the cognitive stimuli signal. Our approach significantly outperforms GLM method while there exists the delay. The approach can help us solve the SFDP problem in fMRI time series matching and thus of great promise to reveal brain dynamics.
KeywordFast Fourier transform (FFT) frequency domain functional magnetic resonance imaging (fMRI) general linear model (GLM) time domain time series
DOI10.1109/TNB.2016.2572401
URLView the original
Language英語
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.UMacau Research Institute
2.University of California, San Diego
3.Dalian University of Technology
4.Universidade de Macau
5.Dalian Maritime University
Recommended Citation
GB/T 7714
Chen L.,Zhang W.,Liu H.,et al. A space affine matching approach to fMRI time series analysis[J]. IEEE Transactions on Nanobioscience,2016,15(5):468-480.
APA Chen L.,Zhang W.,Liu H.,Feng S.,Chen C.L.P.,&Wang H..(2016).A space affine matching approach to fMRI time series analysis.IEEE Transactions on Nanobioscience,15(5),468-480.
MLA Chen L.,et al."A space affine matching approach to fMRI time series analysis".IEEE Transactions on Nanobioscience 15.5(2016):468-480.
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