• Wed, 09/06/2017 - 17:24joanna.smith
    Dear all, I am using a brain surface coil to do some resting state fMRI experiments. As a result, the signal I'm getting isn't homogeneous - the images being brighter/having more signal at the surface of the brain than basally. I am new to the resting...
    688 reads
  • Sat, 08/19/2017 - 10:03Sun Yuan
        您好,老师!     我最近准备做统计分析时有一点小疑问,之前DPARSF的界面上有一个选项是nuisance covariates regrssion,这个是已经把协变量做了一个回归分析,那之后统计板块的two-sample T-Test里还要再加协变量的有关文件吗?关于协变量这块不是很懂,希望老师不吝赐教。  
    1270 reads
  • Tue, 08/08/2017 - 12:01shallvin
    各位老师,我想对FC获得的相关性系数做病例组和对照组的t检验,经过z变换以后的值做双样本t检验得出的结构就是最终结果吗,还需不需要做类似于多重比较校正的检验?谢谢。
    1351 reads
  • Thu, 08/03/2017 - 21:59bohaterewicz
    Dear Experts, I would like to perform functional connectivity analysis within DMN of resting state datas from 2 groups. After preprocessing and band-pass filtering. I'm going to perform ICA and select the components having higest correlation within DMN (...
    784 reads
  • Sat, 07/29/2017 - 21:21wujingxi
    老师,请问segment里边形成的mco*.nii是配准的平均像还是啥意思,我试了一下,normalize用的的是这个文件,非常感谢
    906 reads
  • Sat, 07/29/2017 - 09:18wujingxi
    PicturesForChkNomalization文件夹的图片怎么判断好与不好,请老师告诉我,非常感谢
    807 reads
  • Wed, 07/26/2017 - 12:21sxmu_psychiatry
    各位老师好! 我想请教一个问题:在进行reho值的组间比较时,我想把被试的结构像作为协变量加入统计,选取的是每名被试的灰质密度(通过VBM分析得到的,进行了normalize的结果)。但是因为功能像和结构像的dimension不同(功能像是61*73*61,结构像是121*145*121),REST会因此而提示无法运算。请问这一问题该如何解决? 我试了一下REST里的reslice image功能,发现如果把结构图像的voxel size改为3*3*3,得到的结果就将dimension变为61*73*61了,...
    931 reads
  • Sat, 07/22/2017 - 10:56wujingxi
    What's the content of constant and quadratic removed?Is the constant same as the Global signal?  Look forward to your reply!
    1012 reads
  • Sat, 07/22/2017 - 09:53wujingxi
    老师您好,怎么理解功能像与结构像是线性相关的平动与转动,而不是扭曲的?
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  • Fri, 07/21/2017 - 20:45wujingxi
    l'm a new learner ,why my file of RealignParameter  doesn't contain the file  .ps.The versions of MATLAB l try include  2009a,2012a and 2014a.Is anything wrong?
    660 reads