CASIA OpenIR  > 09年以前成果
Single-trial variable model for event-related fMRI data analysis
Lu, YL; Jiang, TZ; Zang, YF
Source PublicationIEEE TRANSACTIONS ON MEDICAL IMAGING
2005-02-01
Volume24Issue:2Pages:236-245
SubtypeArticle
AbstractMost methods for fMRI data analysis assume that the hemodynamic responses (HRs) across similar experimental events are same. This assumption is not appropriate when HRs vary unpredictably from trial to trial. Here, we introduce a new method for fMRI data analysis. The main features of the proposed method are as follows: 1) The trial-to-trial variability is modeled as meaningful signal rather than assuming that the same HR is evoked in each trial; 2) Since the proposed method is a constrained optimization based general framework, it could be extended by utilizing prior knowledge of HR; 3) The traditional deconvolution method can be included into our method as a special case. A comparison of performance on simulated fMRI datasets is made using the general linear model, the deconvolution method and the proposed method with receiver operating characteristic (ROC) methodology. In addition, we examined the effectiveness and usefulness of our method on real experimental data.
KeywordBrain Deconvolution Functional Mri General Linear Model
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
WOS KeywordINDEPENDENT COMPONENT ANALYSIS ; HUMAN BRAIN ; FUNCTIONAL MRI ; TIME-SERIES ; ACTIVATION ; DECONVOLUTION ; VARIABILITY ; RESPONSES ; SIGNALS
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering ; Imaging Science & Photographic Technology ; Radiology, Nuclear Medicine & Medical Imaging
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Biomedical ; Engineering, Electrical & Electronic ; Imaging Science & Photographic Technology ; Radiology, Nuclear Medicine & Medical Imaging
WOS IDWOS:000226697800010
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9183
Collection09年以前成果
AffiliationChinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Lu, YL,Jiang, TZ,Zang, YF. Single-trial variable model for event-related fMRI data analysis[J]. IEEE TRANSACTIONS ON MEDICAL IMAGING,2005,24(2):236-245.
APA Lu, YL,Jiang, TZ,&Zang, YF.(2005).Single-trial variable model for event-related fMRI data analysis.IEEE TRANSACTIONS ON MEDICAL IMAGING,24(2),236-245.
MLA Lu, YL,et al."Single-trial variable model for event-related fMRI data analysis".IEEE TRANSACTIONS ON MEDICAL IMAGING 24.2(2005):236-245.
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