DPABI/DPABISurf/DPARSF

Problem with running preprocessing

Submitted by dittmanz on
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DPABI/DPABISurf/DPARSF

Hi there,

While attempting to run the preprocessing on the Demo Data from the fMRI course per the video instructions, I ran into a few issues. Upon hitting run, MatLab says it is launching a parallel pool to run my processing in, but also MatLab says no jobs are currently running. Additionally, it says that the parallel pool is busy, and this continues for hours, over 9 that is. I can't seem to find the file either of the altered data, so perhaps the process is just incomplete. What could be a potential problem? 

Thanks,

Zoe Dittman

Michigan State University

Setup for ancova with covariates

Submitted by hoptman on
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DPABI/DPABISurf/DPARSF

Hi,

I'm trying to set up an ANCOVA with covariates.  I have FD as one covarate and 4 groups (numbered 1, 2,3,4)

How do I set up the analysis.  Can I load in an FD.txt file and a file with groups listed as 1-4, or do I make a multicolumn file with 5 columns, or do I need a separate file for each group, as well as 1 for FD?  Also, how will I know from the output that the covariate has been removed from the data prior to the group F test being computed?

Thanks,

Matt

map small matrix

Submitted by Ali on
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DPABI/DPABISurf/DPARSF
We have correlation matrix (264*264) for 140 subjects and used this matrices in GraphVar to obtained features in excel file such as Betweennes centrality feature (140 subjects*  264 features), then we used SVM classification and the resulted discriminant features was (140 subjects*  80 features). my question, how I convert this discriminant features into NIFTI Image to be used as input for 2 sample T-test in DPABI software???
Your help is appreciated.

should I generate the Z map first before GRFCorrection

Submitted by Freshman2013 on
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DPABI/DPABISurf/DPARSF

Hi, all.

I  run the  two-sample T test between patients and control groups by DPABI and get the T map. I would like to perform the GRF correction.

I found some discussion about GRF correction, which suggested that the T map should be converted into Z  map before GRF correction.

Hence, if I use the DPABI to perform the GRF correction, should I also use the  "y_TFRtoZ.m"  to convert the T map into Z map? And then perform the GRF correction?

Best wishes,

Thanks in advance for your kind help.

Error using CompCor

Submitted by Emilia Cheladze on
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DPABI/DPABISurf/DPARSF
Hello!
I have ​resting state ​data acquired with ​the ​following scanning parameters: TR 2.3, vox size 3x3x3​,​​ and ​I am doing an analysis using DPRSFA V_2.1 and Matlab 2015b​. ​I am reslicing the voxel size ​to ​4x4x4 ​during ​the ​normaliz​ation step (this is so I can compare this data with another resting state data set at the group level)​.

Activation outside the brain

Submitted by Emilia Cheladze on
Forums
DPABI/DPABISurf/DPARSF
Hello!
I am doing an analysis using DPRSFA V_2.1 and Matlab 2015b.​ ​Unfortunately, when I complete the below-described analysis, ​I ​am getting​ ​significant ​activation outside of the brain​ (please see ​the picture in ​the ​attachment​)​. ​Would anyone know what could be the cause of th​is​? 
 
​To describe my analysis, ​I have data from two groups of subjects, acquired with different scanning parameters.
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