请问：1.自身前后研究的配对t检验选mALFF还是ALFF作为统计指标更好？
2.在得到前后差异的脑区后，将其作为ROI，在每个被试的原始图中提取ALFF值还是mALFF值或者zALFF？目的是将前后两次扫描的该ROI的平均ALFF值差异与症状变化分数在SPSS中做相关分析。
先谢谢了
need the sample data for practice.
how can i download it.
thanks
最近用DPARSF老出错，从slice timing就开始，但是单独做slice time又没事，现在我把slice timing后的又重新做，跑了一会儿又报错，请严老师看看怎么回事，如下：
Failed 'Realign: Estimate & Reslice'
Error using ==> spm_bsplinc
File too small.
In file "D:\Program Files\MATLAB\R2010a\toolbox\spm8\spm_realign.m" (v4152), function "smooth_vol" at line 405.
首先谢谢老师分享您的研究成果！我是个初学者，因为看了老是的软件介绍才打算做静息态相关的研究！但是运行没有成功过。
我的环境是windows xp sp2 64bit/windows xp sp3/matlab2012b/2010b rest1.8 DPARSF 2.2_130224 ;
LINUX UBUNTU12.04 64BIT/matlab2010b rest1.8 DPARSF 2.2_130224
下面是任务记录：
老师您好，
关于AlphaSim的使用，我有几个问题，您能否帮助我一下？谢谢
1. 我现在不是resting-state fMRI，可否用rest包里的AlphaSim?
2. 我的voxel size是4x4x5，我rmm应该设置成多大呢？
3. 我在处理fMRI图像的时候，用了8x8x8的平滑，我直接设置FWHM为8可以吗？还是说一定要用估计的FWHM？
非常感激!
Lirong
最近做组间统计的时候遇到一个问题，我用rest image calculator把三组单样本显著的区域做了并集，然后在这个mask内做两组间的对比，我发现有点问题，回头查看mask内有1、2、3值，应该是对应于三组，将这一mask1、2、3全部统一为1后，结果不一样了，论坛老师们是否可以帮忙分析一下？
With DPARSF basic edition, everything works fine, but when I use the DPARSF advanced edition the subjects are not listed, although each has the dicoms in a folder with the subject code in the FunRaw Folder in the Working Direktory, that is correctly set (like before). Does anybody know why the DPARSF toolbox does not recognize the subject folders!?
Thanks a lot!
在slice timing时就出错
Running job #1
------------------------------------------------------------------------
Running 'Slice Timing'
Rehomap was created and overlayed over an ch2 template, now i want find the clusters having hypometabolism or in different contrast.
can i use xjview for that, can rehomap be used?
hi
i got two rehomap after performing reho analysis. after that i used the mreho map for statistical analysis.
there was no error and t-test was completed sucessfully, but when i overlayed it on ch2 template image. it was just a blank image(like plain colour)