Dear Dr. Yan,

I used the 90*90 FC matrix to calculate the topological metric-Modularity on the GRETNA. Several results can be obtained , but I dont kown their meaning: "community_index_All_Node", "participant_coefficient_All_Node", and "size_of_maximum_component". The author of GRETNA did not explain the meaning of these measurments in the Mannual. Could you help me? 

Thanks very much!


[English] The R-fMRI Journal Club 170908

The discussion of this Journal Club will be in English, focusing on paper:


how to set colorbar manual?

Dear experts and Pro. Yan:

                                                  when I look my results in DPABI Viewer, the colorbar only showed the color in the upper amd lower ends. However,  it did not have any color in the middle of colorbar. I do not know how to set the colorbar manual? Or, anyone know that how to load the colorbar from the mat file. Can you send it to me? my email

 Thank you very much!


Resample before CAWS

Dear Dr. Yan,

When I was computing CWAS, I found data should be resample  to voxel size of isotorpic 4mm. But after all preprocessing, all data had changed to 4D which can't be resliced by dpabi's function "Image Reslicer" correcttly.

Or can I set the voxel size to [4 4 4] in Normalize step directly and skip the last resample after all preprocessing? Looking forward to your reply. Thanks in advance!




Use scripts to generate montage images in DPABI_VIEW

1. Open DPABI_VIEW, and load your images and setup.


gift ICA挑选成分后进行单样本 T检验时,mask选用的疑惑




parallel pool error

Hi, Dr. Yan, When I regressed covariates of 200 subjects using latest DPARSF,  an error was shown as below. However, it was fine when I computed just two subjects.


Error using Rich Club Coefficient, Generating Random Networks and GLM

Hey GraphVar team,

Thank you for all you hard work in making this tool. Sadly, I've been having a few issues. 

When attempting to look at Rich Club coefficient (also using freshly installed Sample Workspace data), I get the following error:


An error in CWAS


I came across an error when I was using CWAS in DPARSF2.3, How to solve this problem?

Looking forward to your reply. Thank you in advance.


How to do the VBM analysis? Thanks. Gray matter density in MNI space

Dear Dr. Yan,

I am working on the data from R-fMRI maps project. Great thanks for sharing the proprecessed data with us. 

Would you mind telling us how to do the voxel-based morphometry analysis of the structural MRI data? For instance, can you explain the steps to calculate the gray matter density in MNI space? Thanks again.

Best Regards,




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