Submitted by chouyiyu on Fri, 07/12/2013 - 23:15
Dear DPARSF users,
I was wondering if DPARSF is converting the fmri signals from arbitary scanner uints into percentage signal change during the processing step.
I will appreciate it if you can let me know.
Thanks in advance !!
YY
Submitted by YAN Chao-Gan on Sat, 07/13/2013 - 05:34 Permalink
Re: percentage signal change
No.
All the resutls will not be affected by the grand mean normalization.
Except ALFF and no standardization (not divided by mean (mALFF), nor z-standardized (zALFF)).
Best,
Chao-Gan