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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July 28, 2015 02:56PM
The zero intercept in the model allows for testing the desirable hypothesis

b_1 = b_2 = ... = b_n = 0

However, a model with a zero intercept is only possible for one group of subjects without any other explanatory variables because of parameterization constraints. In other words, you cannot formulate a model with no intercept when there are other variables (e.g., multiple groups, multiple conditions, or covariates) in addition to the multiple effect estimates from the basis functions.

Gang
Subject Author Posted

3dLME model troubles

Isaac Schwabacher July 24, 2015 03:48PM

Re: 3dLME model troubles

gang July 24, 2015 04:25PM

Re: 3dLME model troubles

Isaac Schwabacher July 24, 2015 04:35PM

Re: 3dLME model troubles

gang July 26, 2015 11:32AM

Re: 3dLME model troubles

Isaac Schwabacher July 28, 2015 11:40AM

Re: 3dLME model troubles

gang July 28, 2015 02:56PM

Re: 3dLME model troubles

Isaac Schwabacher July 28, 2015 06:14PM

Re: 3dLME model troubles

gang July 29, 2015 02:16PM

Re: 3dLME model troubles

Isaac Schwabacher July 29, 2015 04:57PM

Re: 3dLME model troubles

gang July 30, 2015 12:50PM