How can we skip the pre-processing step? how to calculate FC between all pairs of the different ROI's of the AAL template?

Submitted by dtelt on

Hello Guys,

I have couple of questions regarding DPARSF, to understand I used the demo data dor DPARSF, the questions are as follows:

how can we skip the Pre-processing step once it was already done?  I’m interested in repeating the FC calculations without repeating the extensive and cumbersome preprocessing, which can be done only once.

I also need to calculate FC between all pairs of the different ROI's of the AAL template. How can I do this?  andI am having trouble understanding the output from "Functional Connectivity, What does each file mean? Is there any manual that can explain the meaning of the files in the FC folder?

And for input does all data need to be in Dicom format? Can it be mixed (Dicom and Nifti) or would it work if it is all Nifti?

Thank you.

Please help me out with this. I appreciate.

 

 

 

YAN Chao-Gan

Fri, 07/07/2017 - 06:30

Hi,

1. You can skip the steps by checking off the checkbox. An easier way is to select "Blank" under "Tempate Parameter" menu. Be sure you have set the Starting Directory Name correctly.

2. You can press "Extract ROI Signals" on DPARSF, and then the correlation matrics (and Fisher's r-to-z transformed) would be generated under Results/ROISignals...

3. We are trying to organize descriptions at wiki.rfmri.org. Will let you know once the "output" part being posted.

4. It works for NIfTI.

Best,

Chao-Gan