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  

|
June 08, 2006 04:03PM
> So, does this mean I will have to change my matrix file for the
> first linear contrast from
>
> 0 0 0 0 0 0 -1 0 1 0 0 0 0 etc.....
>
> to
>
> 0 0 0 0 0 0 -1 -1 -1 -1 -1 -1 -1 -1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0.... etc?


Yes, that is right. However, you can use another more amenable option -gltsym to simplify the specification.

> It seems this matrix is specifying separate comparisons at each
> time point of the lags, when all I need is a single auc comparison for
> the LC, and a dumpout of the HRF response to each -stim_file class.


I assume the big matrix is for comparing two conditions. There are two approaches to set up such a contrast: (1) Comparing the condition at each time point; (2) Comparing their UAC. The two mean differently and you would come up with two different results, and it is your choice.

Gang
Subject Author Posted

matrix files when using -1resp in 3dDeconvolve

Jim Bjork June 07, 2006 04:35PM

Re: matrix files when using -1resp in 3dDeconvolve

Gang Chen June 08, 2006 04:03PM

Re: matrix files when using -1resp in 3dDeconvolve

Jim Bjork June 12, 2006 11:34AM

Re: matrix files when using -1resp in 3dDeconvolve

Gang Chen June 12, 2006 02:10PM

Re: matrix files when using -1resp in 3dDeconvolve

Jim Bjork June 12, 2006 02:52PM

Re: matrix files when using -1resp in 3dDeconvolve

Gang Chen June 12, 2006 03:03PM