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 Chen
April 09, 2009 05:48PM
> Im pretty sure it is a fixed-shape IRF

Yes indeed you're right.

However, it doesn't make sense to have the following 4 lines in the script:

-iresp 1 ${subj}_${run3}_mf-norm-irf -TR_times 0.575 \
-iresp 2 ${subj}_${run3}_ff-norm-irf -TR_times 0.575 \
-iresp 3 ${subj}_${run3}_nf-norm-irf -TR_times 0.575 \
-iresp 4 ${subj}_${run3}_fa-norm-irf -TR_times 0.575 \

Since you assumed the IRF being a fixed-shape curve, Gamma variate, what you get out of those 4 lines would be not interesting at all.

Regarding group analysis in this case, you can simply bring those beta values and pick up whatever program appropriate for the design.

Gang
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Subject Author Posted

Running 3dAnova2

Student April 09, 2009 03:11PM

Re: Running 3dAnova2

Gang Chen April 09, 2009 04:02PM

Re: Running 3dAnova2

Student April 09, 2009 04:44PM

Re: Running 3dAnova2

Gang Chen April 09, 2009 05:48PM

Re: Running 3dAnova2

Student April 09, 2009 08:33PM

Re: Running 3dAnova2

Gang Chen April 10, 2009 03:35PM