DPABI/DPABISurf/DPARSF

questions related Rest Alphasim

Submitted by yaosir on

Dear experts,

    I'm now doing some task-fMRI analysis about the group difference between internet disorders and health controls. Since no regions of ROI could survived FDR correction for multiple comparisons using a small volume correction, I've tried the REST's AlphaSim program for whole-brain and small volume correction. And I'm not sure whether my manipulation was right, and I’d like to ask for your advice.

Unwarp using field map images

Submitted by Sun Delin on

Dear Prof. Yan,

    I did not find in the DPARSF the option for unwarping using fieldmap images (both magnitude and phase maps). Can I do "fieldmap unwarping & relignment" using SPM8, and then do the following steps using DPARSF? I am not sure whether it is ok to put the step of religment before the step of slice timming. May I have your suggestions? Many thanks!

 

Bests,

Sun Delin

How to create bilateral ROI masks?

Submitted by yaosir on

Dear experts,

I would like to create a mask including two 3-mm spheres representing right and left dACC, since I am not interested in lateralization of this regions and try to avoid the issue of multiple correction (2, right and left). However, I failed to find the way to create such a bilateral ROI mask. I will be really apreciated if anyone of you could help me to solve this question.

Best,

Vincent

DPARSF not finding files

Submitted by cogsci on

I have attempted to use DPRASF with my data and with the unzipped contents of ProcessingDemoData.zip .  The "participants" folder is empty.  Drilling down further into the FunRaw folder, does not solve the problem.

 

When I go into Quality Control, I can see the subject directories, but not act upon the files contained within (see "error dialog").

 

clustering after alphasim

Submitted by zswgzx on

Hi DPABI experts,

I'd like to perform a statistical analysis, i.e. two-group ttest using the z-transformed functional connectivity maps, and have already done the model estimation.

Now I'm trying to do multiple comparison correction with alphasim and have questions about the procedures.

So I open Viewer from dpabi main menu, import the overlay T2.nii from model estimation, and choose AlphaSim correction for computation. How should I use the output AlphaSim.txt for extraction of significant clusters afterwards?

No output flies of smooth

Submitted by Waymen on

Dear Mr.Yan,

I have performed resting MRI preprocessing with DPARSF Basic version (e.g., slice timing, realign, normalization, and smooth). However, there were no output flies of smooth, as well as, the file "PicturesForChkNormalization" was empty. Besides, my MatLab is 2010a version (I have tried to reset it and use another computer, yet it did not work). The attachments are parameters I set, the outcomes after preprocessing, and steps of MatLab. Thanks for your help.

 

Best,

Waymen.