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
April 15, 2019 06:04PM
> Is it possible to do something similar in AFNI?

Model comparison is currently not implemented in 3dLME due to the complexity at the voxel level.

> Also, why it does not let me run the analysis without random effects specified (I have tried both: -ranEff NA and no ranEFF option at all)?

The current implementation in 3dLME requires a minimum setting with a random intercept. For voxel-wise analysis, it's hard, it not impossible, to vary the model or the random-effects components from voxel to voxel.

> How can I correctly report the betas that are taking the covariate in account?

How are you modeling the random effects? With a random intercept or both random intercept and slope? Does the average covariate value differ much between the two levels of the within-subject factor?
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Subject Author Posted

3dLME

giono April 15, 2019 08:00AM

Re: 3dLME

gang April 15, 2019 06:04PM

Re: 3dLME

giono April 16, 2019 04:01AM

Re: 3dLME

gang April 16, 2019 10:30PM

Re: 3dLME

giono April 17, 2019 08:32AM

Re: 3dLME

gang April 17, 2019 11:32AM

Re: 3dLME

giono April 18, 2019 07:18AM

Re: 3dLME

gang April 18, 2019 12:21PM

Re: 3dLME

giono April 19, 2019 04:58AM

Re: 3dLME

gang April 19, 2019 06:02PM