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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November 19, 2014 11:45AM
Think of it like this: all of the betas and statistics that 3dDeconvolve outputs comes out of a gltsym, but the syms for the stims you input are generated by default, without you having to request them. So if you have
3dDeconvolve ... \
    -stim_times_AM2 1 foo.1D "BLOCK(4,1)" -stim_label 1 foo \
    -stim_times_AM2 2 bar.1D "TENT(0,10,6)" -stim_label 2 bar \
    ...
then implicitly you also have
    -gltsym 'SYM: +foo[[0..1]] \ +bar[[0..5]]' -glt_label 1 full_model \
    -gltsym 'SYM: +foo[[0..1]]' -glt_label 2 foo \
    -gltsym 'SYM: +bar[[0..5]]' -glt_label 3 bar
If you change the basis of the stimuli at random, you can always recover the original output by changing the basis of the gltsyms correspondingly (up to numerical error, which can be large for some choices of random basis change).
Subject Author Posted

3dDeconvolve with event subtypes and supertypes

shanusmagnus November 18, 2014 08:51PM

Re: 3dDeconvolve with event subtypes and supertypes

gang November 19, 2014 09:50AM

Re: 3dDeconvolve with event subtypes and supertypes

shanusmagnus November 19, 2014 10:56AM

Re: 3dDeconvolve with event subtypes and supertypes

gang November 19, 2014 11:15AM

Re: 3dDeconvolve with event subtypes and supertypes

Isaac Schwabacher November 19, 2014 11:45AM