blogs

  • Alphasim question

    Submitted by catherine1994 on
    Forums
    Dear All,

    After my paired t-test analysis, I would like to use Alphasim for multiple comparision correction....however, I'm not sure about the procedure...
    From what I saw in the video, it seems to be 1) set the p value in slice viewer 2)check the list of alphasim correction provided in slice viewer and 3)enter in the cluster size value, etc accordingly....

  • DPARSF_V2.2_121225 / Warnings and empty .txt-files when writing single precision variables to .txt-files

    Submitted by hbaetschmann on
    Forums
    Doing ROI-to-ROI-FC-Analysis starting with FunImgARC-files produced warning-messages 'Warning: Attempt to write an unsupported data type to an ASCII file. Variable '...' not written to file.' when trying to write the result-files with extension '.txt' (ROICorrelation_subjxx.txt, ROICorrelation_FisherZ_subjxx.txt and ROISignals_subjxx.txt) in the result-directory 'Result/FC/FunImgARCF_ROISignals/'. Debugging showed, that the command 

    save([fullfile(pathstr,['ROISignals_', name]), '.txt'], 'ROISignals', '-ASCII', '-DOUBLE','-TABS') (and 
  • DPARSF_V2.2_121225 / Jobmats / Template....mat

    Submitted by hbaetschmann on
    Forums

    Unfortunately the field 'DPARSFVersion' in the jobtemplates is still set to 'V2.2_120901Beta'. Having worked a lot with this beta version and now working with the final Version 2.2 I had some troubles tracing back some results, because I used the software version indicated in the saved mat-files, which was the wrong one. Can you provide updated templates ? Beneath that, I like to work with DPARSF and REST. Best thanks !  

  • 有关mica和gift

    Submitted by fish on
    Forums
    老师:
          你们开发的mica中有提到:如需要提取该成分进入后续分析(如组间比较,和医学量表做相关分析等),可以点击“Extract!”按钮,提取所有被试的该成分的空间模(以 NIFTI 格式保存)和时间模式(所有的被试的时间模式均放在一个 MATLAB 的 mat 文件中保存,可以用 MATLAB 打开和计算)到一个指定的目录中。我想问如果在gift中如果想做这样类似的计算,用什么具体流程呢?因为没有看到gift中有extract的按钮。
          
  • 有关ica做t检验

    Submitted by fish on
    Forums
    尊敬的老师:
          我刚开始学习影像处理,最近做在用gift做ica,很多文献说做各个component的one—sample t检验,因为gift做出来后是以sub为单位做成压缩文件的,所以我就将每个sub文件解压,挑出相应的component,但是用spm做t检验时没有发现voxel,想问原因,还是说我这么做的方法本来就是错误的。
  • 关于写论文的一些问题

    Submitted by lwz110911 on
    Forums
     大家好:如下图所示,这是我从一篇论文中截下来的图。我想知道这个BA分区是怎么得到的,脑区是怎么和BA分区有关系的,用MRIcro软件可以得到么?

    下图 我选取的是正常人和抑郁人有差异的体素坐标,转换到MNI上。然后在MRIcro上定位出这样子的结果。后面的步骤就不会了。如果可以接下来的步骤希望大家给我讲解下。谢谢大家!
  • 有关ica的后续处理

    Submitted by fish on
    Forums

        老师:我想用gift去算静息态的网络,先使用spm做预处理,然后用pca2次降维,再使用informax做back restruction,得出46个components后,有下面一些问题想请教您:
    1、很多文献说按照模版比如DMN、背侧注意网络之类的挑选成分,我想问具体的流程是怎样的,因为只给出了这些网络包含了哪些脑区,却都没有说清楚具体是怎样操作的
    2、有的文献还说要使用wfu等软件包设计ROI,但有的又说不用,这使我很迷茫

  • DPARSF 出错

    Submitted by yubing on
    Forums
    DPARSF 2.2
    REST 1.8
    Matlab 2011b
    WINDOWS 2008

    出错信息

    Index exceeds matrix dimensions.

    Error in y_Normalize_WriteToMNI_DARTEL (line 47)
    SPMJOB.matlabbatch{1,1}.spm.tools.dartel.mni_norm.data.subj(1,1).flowfield={[T1ImgNewSegmentDir,filesep,SubjectID,filesep,DirImg(1).name]};

  • Question on setting parameters

    Submitted by farras on
    Forums
    In the following lines, what does SliceOrder refer to? is it the order of slices from the first slice to the total number of slices? And what is the role of ReferenceSlice? AutoDataProcessParameter.SliceTiming.SliceOrder=[1:2:239,2:2:240]; % REVISIT.... was [1:2:25,1:2:24] AutoDataProcessParameter.SliceTiming.ReferenceSlice=25; With thanks, farras
  • AGE problems

    Submitted by yhj2013 on
    Forums

    各位老师好,
              学生是静息态的初学者,数据分析时遇到了一个问题,其实看起来是比较老的年龄问题,但是年龄确实是影响认知的因素,看了文章里一般都是年龄没有差异,或者是处理的时候回归掉让结果更加完美,但是如果不回归掉,在写文章的时候能否先回归得出结果然后再不回归的结果前后对比,如果差异不大则可以考虑暂时不计年龄的影响啊?是否需要这样说明一下?还是如果不进行调整的话做出来的结果可能不科学或者是不被认可?我试验中的年龄差异主要来源于其中两个组之间(一共三组被试),那我应该怎么做才能既不回避了年龄的因素,文章的统计方法上也没有错误呢?非常感谢!