Spatio-temporal identification of hemodynamics in fMRI: A data-driven approach
Yan, LR; Hu, DW; Zhou, ZT; Liu, YD; Yang, GZ; Jiang, T
2004
发表期刊MEDICAL IMAGING AND AUGMENTED REALITY, PROCEEDINGS
ISSN0302-9743
文章类型Article
卷号3150页码:213-220
摘要This paper presents a new data-driven method to identify the spatial and temporal characteristics of the cerebral hemodynamics in functional magnetic resonance imaging (fMRI). The experiments are in block design paradigm and the scans in task blocks are investigated in a sequential manner. Spatial evolvement of the activated regions along with the time-course are demonstrated. The time series of each region is predicated as the convolution of the stimuli with the hemodynamic response function (HRF) formulated as the sum of two gamma, functions. The predicted time series is fitted to the actual one by using a nonlinear least-squares procedure to estimate the HRF parameters. Analyses on empirical fMRI datasets exhibit obviously the spatial and temporal dispersion of hemodynamics.
收录类别ISTP ; SCI
语种英语
WOS记录号WOS:000223567700026
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/13922
专题中国科学院心理研究所回溯数据库(1956-2010)
作者单位1.Natl Univ Def Technol, Dept Automat Control, Changsha 410073, Hunan, Peoples R China
2.Chinese Acad Sci, Key Lab Mental Hlth, Beijing 100101, Peoples R China
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Yan, LR,Hu, DW,Zhou, ZT,et al. Spatio-temporal identification of hemodynamics in fMRI: A data-driven approach[J]. MEDICAL IMAGING AND AUGMENTED REALITY, PROCEEDINGS,2004,3150:213-220.
APA Yan, LR,Hu, DW,Zhou, ZT,Liu, YD,Yang, GZ,&Jiang, T.(2004).Spatio-temporal identification of hemodynamics in fMRI: A data-driven approach.MEDICAL IMAGING AND AUGMENTED REALITY, PROCEEDINGS,3150,213-220.
MLA Yan, LR,et al."Spatio-temporal identification of hemodynamics in fMRI: A data-driven approach".MEDICAL IMAGING AND AUGMENTED REALITY, PROCEEDINGS 3150(2004):213-220.
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