should I generate the Z map first before GRFCorrection

Submitted by Freshman2013 on
Forums
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.

ReOH and ALFF maps

Submitted by dbd18 on
Dear experts, I am wondering whether you can give me more information about ReOh and ALFF maps or suggest some references where I can get the following information: 1) What are the typical ranges and inter subject variability of ALFF and ReOH maps? 2) Do I need to intensity normalise the maps output from DPARSFA for the ALFF and ReOh or can I use the m* output directly in the statistical analysis? If intensity normalisation is needed, could you suggest by what intensity value (whole brain, gm value)? 3) Are ReOh and ALFF measures reliable both in the gm and wm?

Error using CompCor

Submitted by Emilia Cheladze on
Forums
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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