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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Philippe Goldin
March 30, 2009 05:26PM
Greetings Rick:

Thank you for the reply.

To be clear, the preprocessing steps are

1. despiking
2. removal of variance elated to respiration and heart rate (RetroTS.m --> RETROICOR)
3. volreg

Is there a way to remove the variance related to respiration and heart rate from the time series in each voxel within AFNI or is it necessary to use matlab to create the RETROICOR regressors?

Gary Glover here at Stanford implements RETROICOR prior to any preprocessing steps.

Will your afni_proc.py script work with spiral in/out data as well as EPI?

Is there any way to use 3dCalc to remove variance in a every time series even after volreg?
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Subject Author Posted

removing variance in time series during preprocessing

Philippe Goldin March 28, 2009 11:46PM

Re: removing variance in time series during preprocessing

rick reynolds March 29, 2009 12:07AM

Re: removing variance in time series during preprocessing

Philippe Goldin March 30, 2009 05:26PM

Re: removing variance in time series during preprocessing

rick reynolds March 30, 2009 06:56PM

Re: removing variance in time series during preprocessing

Robert Barry May 29, 2009 11:10AM

Re: removing variance in time series during preprocessing

rick reynolds April 09, 2009 01:26PM

Re: removing variance in time series during preprocessing

Fred Tam April 02, 2009 10:44PM