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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Jatin
January 27, 2009 02:42PM
Hi,

I have a fast even related design and was hoping to get a little bit of input on how to setup my regression model.

The task involves seeing subtle and overt emotional expressions (as well as neutral expressions). Subject must indicate if the expressions is emotional or neutral. Accuracy for the overt expressions and for the neutral expressions is very high (approx. 95%) and accuracy for the subtle expressions is around 50%. In my current model, I have the following regressors:
correct-subtle
incorrect-subtle
correct-overt
correct-neutral

Should I also include incorrect-overt and incorrect-neutral regressors if there are only a small percentage of these stimuli there were incorrect? It can't hurt the statistics of interest, correct? My ultimate goal is to look at glts for correct/incorrect-subtle vs. correct-neutral and correct-overt vs. correct-neutral.

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Subject Author Posted

Regressors in Deconvolve

Jatin January 27, 2009 02:42PM

Re: Regressors in Deconvolve

Bob Cox January 27, 2009 03:29PM

Re: Regressors in Deconvolve

Jatin January 28, 2009 10:53AM

Re: Regressors in Deconvolve

Jatin January 29, 2009 03:00PM

Re: Regressors in Deconvolve

Bob Cox January 29, 2009 04:32PM