Spatio-temporal identification of hemodynamics in fMRI: A data-driven approach

PSYCH OpenIR > 中国科学院心理研究所回溯数据库(1956-2010)

	Spatio-temporal identification of hemodynamics in fMRI: A data-driven approach
	Yan, LR ; Hu, DW ; Zhou, ZT ; Liu, YD ; Yang, GZ ; Jiang, T
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.
	2004
语种	英语
发表期刊	MEDICAL IMAGING AND AUGMENTED REALITY, PROCEEDINGS
ISSN	0302-9743
卷号	3150 页码:213-220
期刊论文类型	Article
收录类别	ISTP ; SCI
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
推荐引用方式 GB/T 7714	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.