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
August 14, 2007 12:53PM
> So should I be using 7 or 8?

With TENT(0, 14, 8), you should have 8 regressors, as indicated in the 3rd argument of your basis function type.

Instead of using -glt, I highly recommend symbolic coding of general linear testing with -gltsym. See here:

[afni.nimh.nih.gov]

> Also, on a side note: in the example on the web, it mentioned you can
> add up just the #2,3,4,5,&6 beta weights for one stimulus type... I'm
> slightly confused at when this is useful?

In that example, because of undershoots (negative betas) at the beginning and end of the HRF, those few betas were ignored so that they would not cancel each other.

Gang
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quick question: GLT using TENT function

Matthew August 14, 2007 12:27PM

Re: quick question: GLT using TENT function

Gang Chen August 14, 2007 12:53PM