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
January 28, 2004 03:27PM
I assume: (1) you are running 3dDeconvolve with 3 regressors generated with waver; (2) you model the baseline with a straight line (default or -polort 1); (3) there is only one run in your dataset.

The glt vector for testing punish vs. reward would be

0 0 0 1 -1

The first two 0's correspond to the constant and slope of the baseline. The rest part (0 1 -1) is for the contrast test of punish vs. reward. If you have multiple runs concatenated in the dataset (e.g., 3 runs), you need to multiply the number of those two 0's at the beginning (e.g., 3 X 2 = 6 zeros) in the glt vector.

Gang
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Subject Author Posted

glm questions

Avram Holmes January 28, 2004 11:57AM

Re: glm questions

Gang Chen January 28, 2004 12:05PM

Re: glm questions

Avram Holmes January 28, 2004 12:26PM

Re: glm questions

Gang Chen January 28, 2004 12:48PM

Re: glm questions

Avram Holmes January 28, 2004 03:13PM

Re: glm questions

Gang Chen January 28, 2004 03:27PM