History of AFNI updates  

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April 28, 2022 12:42PM
Hi, Osman-

To check the alignment specifically before looking at stats, I looked at the ve2a QC images in the APQC HTML you sent. It looks quite good now (see attached).

It looks like you are performing a resting state analysis, because you don't have any stimulus files/GLTs in your afni_proc.py command. There is some QC for that in the APQC HTML as well---the seedbased correlation (DMN seed) image is attached---it looks OK; the correlation might be a bit low in some places, but with the transparent thresholding we see "orange" in places we would expect.

I thiiiink your shared image here is of the actual time series values of one EPI, just one of the EPI volumes. Am I understanding this correctly? Because I don't think it is really "correlation" being shown, which you commented about in your question. With scaling on, I think one might expect the noise outside the brain to have large values like that above some kind of threshold. I don't think that is really a worry or sign of badness. Using something like seedbased correlation would be a better test of data quality.

--pt


Subject Author Posted

afni_proc.py example 11b

osman April 20, 2022 07:25PM

Re: afni_proc.py example 11b

ptaylor April 21, 2022 09:55AM

Re: afni_proc.py example 11b Attachments

osman April 21, 2022 05:06PM

Re: afni_proc.py example 11b

ptaylor April 21, 2022 05:12PM

Re: afni_proc.py example 11b

osman April 21, 2022 05:48PM

Re: afni_proc.py example 11b Attachments

ptaylor April 21, 2022 09:28PM

Re: afni_proc.py example 11b Attachments

osman April 28, 2022 12:15PM

Re: afni_proc.py example 11b Attachments

ptaylor April 28, 2022 12:42PM

Re: afni_proc.py example 11b

rick reynolds April 28, 2022 01:06PM

Re: afni_proc.py example 11b Attachments

osman April 28, 2022 07:27PM

Re: afni_proc.py example 11b

osman April 28, 2022 07:30PM

Re: afni_proc.py example 11b

ptaylor April 29, 2022 08:49AM

Re: afni_proc.py example 11b

osman April 29, 2022 10:23AM

Re: afni_proc.py example 11b

ptaylor April 29, 2022 02:52PM



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