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Mon, 07/21/2014 - 10:17houyanan各位老师好! 目前我想使用PCA软件分析静息态fMRI,但是不会用该软件,不知道那里有相关教程呢? 不甚感激!5512 reads
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Mon, 07/21/2014 - 00:41benchenchen各位老师好,我想请教几个关于静息态功能连接数据的相关分析的问题: 1、rest软件里面 rest correlation analysis 分析后我发现每个体素的r值的是不一样的,我认为它分析的应该是每个体素与行为学的相关性。但是我发现不少文献时说提取差异脑区的平均时间序列,而且还能做出相关的坐标图,论坛里面有讨论相关方法,有一种采用g1*(i1~=0), g1是一组zFC....6380 reads
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Sun, 07/20/2014 - 16:00yuzhounhDear all, I have downloaded the test data from http://www.restfmri.net/forum/DemoData and load the configuration data DPARSF_Preprocess_ALFF_FC.mat by DPARSF v2.1 like below An error occurs in the step of "Regress out nuisance covariates...5628 reads
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Sun, 07/20/2014 - 15:53yuzhounhDear all, I have downloaded the test data from http://www.restfmri.net/forum/DemoData and do some preprocessing steps on Sub_001 by DPARSF v2.3. The first image of FunImg, A, AR, ARC, ARCW, ARCWS, ARCWSF are shown in order in the figure...9331 reads
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Sat, 07/19/2014 - 23:34pingfan2008大家好,在阅读文献中,常看到这样的描述: "The resulting T-map (or Statistical map) was masked by a grey matter map, which was obtained by segmenting the mean normalized high resolution T1-weighted images of all the subjects, to include only the areas falling in...13403 reads
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Fri, 07/18/2014 - 20:32benchenchen各位老师好,本人在英文写稿过程中碰到了一个棘手的问题,想请教各位老师。在对rest state fMRI数据静息基于种子点的全脑功能连接分析时,我把全脑信号作为协变量进行了回归,但是单样本结果中的正负FC我都保留了,并进行正常组与病人组的组间比较。在讨论的写作过程中才发现对是否去除全脑信号的争议那么大,尤其我们的研究又纳入了负FC,而且在与病人行为学进行相关分析的过程中发现存在显著相关的为某个负FC。不知我们的结果这样采用了全脑信号回归能否继续成文,或者在文章能说明存在争议性就好了么,...10953 reads
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Thu, 07/17/2014 - 23:21xiaopeng老师: 您好!我用的是matlabR2010b,安装在d盘,调用REST进行DICOM数据分类时出现以下错误,单个序列用SPM进行DICOM转成 NIfTI是可以进行。不知道什么原因造成REST报错呢?下一步怎么解决? 谢谢! 错误提示如下: Now REST is Running on 0 workers. Warning: Directory already...3178 reads
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Thu, 07/17/2014 - 23:21xiaopengREST分类DICOM数据出错,提示ProtocolName出错,在REST_DicomSorter.m中改成SequenceName之后还是出错。之后在DPABI->Utilities->DICOM Sorter做相应修改后再运行,出现一下报错: ??? Index exceeds matrix dimensions. Error in ==> w_DCMSort at 15 fprintf('Read %s etc.\n', OneDICOM{1});...7572 reads
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Wed, 07/16/2014 - 06:11bwmooneyhamDear all, I am trying to use the Slice Viewer within REST to perform cluster-extent corrections on a paired-t image, but am getting the following error when selecting the t-image as the Overlay: ??? Attempted to access theOverlay(11,190); index out of...3450 reads
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Tue, 07/15/2014 - 22:37jma0206各位老师同学大家好, 目前我利用DPARSF软件预处理数据是遇到了一个问题。我希望利用这个软件获得大脑90个区域之间的functional connectivity的矩阵,但是我从软件中的模板选择区域时发 现好像它没有将整个大脑划分为90个区域,所以我无法得到这个矩阵。现在我的问题就是我应该怎么设置DPARSF这个软件去得到这90个区域之间的functional connectivity呢?我需要重新下载模板吗?谢谢大家的帮助。8048 reads