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

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gang
March 12, 2018 03:14PM
> want to know if the output option "-Mean" write the average Fisher's Z scores to the output dataset.

The output is just the average correlation across the brain.

> If not, how can I get the FZ scores?

Use option -Zmean, 3dTcorrMap can 1) compute the voxel-wise correlation and convert it to Z-score, 2) perform the averaging across the brain, and 3) convert back to correlation. If you really want the output in Fisher-transformed Z-score, you can convert the output back to Z-score:

3dcalc -a yourdata_R -expr 'atanh(a)' -prefix yourdata_Z

Gang
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Output for 3dTcorrMap

XiaodanXu March 12, 2018 09:18AM

Re: Output for 3dTcorrMap

gang March 12, 2018 03:14PM