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  

|
March 04, 2014 11:02AM
> Would it be possible to calculate the t-value for a given q-value, even though there is no
> voxel in the dataset that passes this threshold and return that value instead? Or would it
> be possible to return a t-value that is very high instead?

Jonathan, the threshold for the t-stat values associated a specific FDR q-value is determined by the distribution of all the t-values in the brain. That is why you're seeing the phenomenon, and there is no way to say anything where you don't have any data.

Gang
Subject Author Posted

fdrval: ceiling effect for given q-value

jlisinski February 28, 2014 02:42PM

Re: fdrval: ceiling effect for given q-value

gang March 04, 2014 11:02AM

Re: fdrval: ceiling effect for given q-value

jlisinski March 12, 2014 05:35PM

Re: fdrval: ceiling effect for given q-value

Emperor Zhark March 13, 2014 09:33AM

Re: fdrval: ceiling effect for given q-value

Emperor Zhark March 14, 2014 09:11AM

Re: fdrval: ceiling effect for given q-value

jlisinski March 17, 2014 01:06PM