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
March 25, 2015 12:15PM
The residuals are something in the FMRI signal that you could not explain with those regressors you specified in the model. So if you have resting state data under two different conditions, it does not make sense to obtain the contrast of the two residual time series. Instead, just treat them the same way (residuals are just residuals, and presumably/ideally have nothing to do with the conditions). You could estimate FWHM values from each residual series separately, and then use the average for multiple testing correction. Or you could concatenate the two residual time series before estimating the FWHM values.

Gang



Edited 1 time(s). Last edit at 03/25/2015 12:40PM by Gang.
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Subject Author Posted

How to determine extent threshold for contrast and connectivity

gauravm March 23, 2015 02:01PM

Re: How to determine extent threshold for a contrast

gang March 23, 2015 03:27PM

Re: How to determine extent threshold for a contrast

gauravm March 25, 2015 11:15AM

Re: How to determine extent threshold for a contrast

gang March 25, 2015 12:15PM