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Finer discrimination of brain activation with local multivariate distance
Zhen Zonglei; Tian Jie; Zhang Hui; Tian, Jie
Source PublicationPROGRESS IN NATURAL SCIENCE
2007-12-01
Volume17Issue:12Pages:1508-1514
SubtypeArticle
AbstractThe organization of human brain function is diverse on different spatial scales. Various cognitive states are always represented as distinct activity patterns across the specific brain region on fine scales. Conventional univariate analysis of functional MRI data seeks to determine how a particular cognitive state is encoded in brain activity by analyzing each voxel separately without considering the fine-scale patterns information contained in the local brain regions. In this paper, a local multivariate distance mapping (LMDM) technique is proposed to detect the brain activation and to map the fine-scale brain activity patterns. LMDM directly represents the local brain activity with the patterns across multiple voxels rather than individual voxels, and it employs the multivariate distance between different patterns to discriminate the brain state on fine scales. Experiments with simulated and real fMRI data demonstrate that LMDM technique can dramatically increase the sensitivity of the detection for the fine-scale brain activity patterns which contain the subtle information of the experimental conditions.
KeywordFunctional Magnetic Resonance Imaging (Fmri) Statistical Analysis Multivariate Distance Local Pattern Pattern Classification
WOS HeadingsScience & Technology ; Technology
WOS KeywordFALSE DISCOVERY RATE ; FUSIFORM FACE AREA ; FUNCTIONAL MRI ; FMRI ; REPRESENTATIONS ; PERCEPTION ; OBJECTS ; CORTEX
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Science & Technology - Other Topics
WOS SubjectMaterials Science, Multidisciplinary ; Multidisciplinary Sciences
WOS IDWOS:000253164300016
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9390
Collection09年以前成果
Corresponding AuthorTian, Jie
AffiliationChinese Acad Sci, Inst Automat, Key Lab Complex Syst & Intelligence Sci, Med Image Proc Grp, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhen Zonglei,Tian Jie,Zhang Hui,et al. Finer discrimination of brain activation with local multivariate distance[J]. PROGRESS IN NATURAL SCIENCE,2007,17(12):1508-1514.
APA Zhen Zonglei,Tian Jie,Zhang Hui,&Tian, Jie.(2007).Finer discrimination of brain activation with local multivariate distance.PROGRESS IN NATURAL SCIENCE,17(12),1508-1514.
MLA Zhen Zonglei,et al."Finer discrimination of brain activation with local multivariate distance".PROGRESS IN NATURAL SCIENCE 17.12(2007):1508-1514.
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