AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

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August 29, 2022 02:45PM
Hi-

What processing has been done already? Or is the dataset raw?

Note that some detrending is ON by default in 3dRSFC:
-nodetrend      = Skip the quadratic detrending of the input that
                    occurs before the FFT-based bandpassing.
                   ++ You would only want to do this if the dataset
                      had been detrended already in some other program.

I guess its possible ALFF might be different due to a scaling factor (that should be uniform across the volume) but fALFF should be quite similar.

And what DPABI command are you using?

--pt
Subject Author Posted

f/ALFF calculation with 3dRSFC is different compared to DPABI output

melissaneuro August 29, 2022 08:53AM

Re: f/ALFF calculation with 3dRSFC is different compared to DPABI output

ptaylor August 29, 2022 02:45PM

Re: f/ALFF calculation with 3dRSFC is different compared to DPABI output

melissaneuro September 01, 2022 01:51PM

Re: f/ALFF calculation with 3dRSFC is different compared to DPABI output

melissaneuro September 07, 2022 08:48AM

Re: f/ALFF calculation with 3dRSFC is different compared to DPABI output

ptaylor September 07, 2022 05:02PM