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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February 18, 2021 01:05PM
Hi there,

I'm looking to calculate tSNR values and have used the following syntax, as per this post:

3dTstat -mean -prefix rm.signal.all all_runs.$subj+tlrc"[$ktrs]"
3dTstat -stdev -prefix rm.noise.all errts.${subj}_REML+tlrc"[$ktrs]"
3dcalc -a rm.signal.all+tlrc
-b rm.noise.all+tlrc
-c full_mask.$subj+tlrc
-expr 'c*a/b' -prefix TSNR.$subj

Now that I have TSNR.$subj files, I can visually inspect them for signal loss, but how can I extract the tSNR values of interest from these newly generated files?

Thanks!
Amar
Subject Author Posted

tSNR calculation

aojha17 February 18, 2021 01:05PM

Re: tSNR calculation

Daniel Glen February 18, 2021 05:33PM

Re: tSNR calculation

aojha17 February 18, 2021 09:26PM