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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Philippe Goldin
November 04, 2003 06:30PM
I ran 3dDeconvolve with 3 predictors on 27 subjects and am now looking at the full model F. What is the best way to generate a group stat at every voxel based on the F value from the full model?

Because 3dttest works on the t-values, should i do the following?

convert F to t values; sub-brik 1 is the full model F value:
3dcalc -a "file[1]" -expr "sqrt (a)" -prefix fileFtoT

glue F back on (to make sure that t^2 = F):
3dbucket

generate group t-map:
3dttest

Is this proper?
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Subject Author Posted

avergaing across F-values

Philippe Goldin November 04, 2003 06:30PM

Re: avergaing across F-values

Gang Chen November 04, 2003 07:38PM

Re: avergaing across F-values

philippe goldin November 05, 2003 11:31AM

Re: avergaing across F-values (normality)

Dan Rowe November 05, 2003 12:05PM

Re: avergaing across F-values

Gang Chen November 05, 2003 12:11PM