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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September 29, 2014 10:20AM
> I am not sure which p-value or any threshold value is appropriate, because the correlation
> map changes with different threshold value (qutorange/manual, p-value, q-value, etc.)
> To show the results of correlation map, I wonder which threshold should be used.

The p-value you see underneath the slider bar is the voxel-wise probability. You can choose any threshold or p-value you feel comfortable with for general visualization. If you want to consider to control for multiple testing errors, use either FDR q-value or FWE corrected value for thrsholding. To obtain the minimum cluster size, run 3dClustSim with a mask and the FWHM values.

> If I apply FDR curve menu, is correlation map affected? When I choose FDR curve, q-value
> appears, but there is no change in the correlation map.

When you threshold the activation patterns with a q-value of, for example, 0.05, there is no change in the correlation map? No change compared to what?

Gang
Subject Author Posted

P-value in AFNI

Seul September 25, 2014 10:56PM

Re: P-value in AFNI

gang September 26, 2014 03:19PM

Re: P-value in AFNI

Seul September 26, 2014 04:46PM

Re: P-value in AFNI

gang September 26, 2014 05:10PM

Re: P-value in AFNI

Seul September 28, 2014 03:40PM

Re: P-value in AFNI

gang September 29, 2014 10:20AM

Re: P-value in AFNI

Seul September 29, 2014 03:50PM

Re: P-value in AFNI

gang September 30, 2014 10:28AM