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  

|
March 12, 2010 10:44PM
I am currently trying to learn how to run analysis using 3dGCR. I am interested in looking at connectivity across 2 conditions within an event-related paradigm (negative and positive anticipation; or NA and PA, see example regressor functions below).

When I run the causality analysis, do I simply include the whole time series, but covary out the regressors I am NOT interested in (e.g., NI and PI)...OR, do I need to enter in the data from the regressors for only those conditions I am interested in (which would be difficult due to overlap between regressors of interest and those of no interest)?

Thanks in advance for the help.


NA NI PA PI
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0.01 0 0 0
0.27 0 0 0
0.76 0 0 0
1 0.02 0 0
0.81 0.52 0 0
0.32 1 0 0
0.07 0.52 0 0
0.01 0.13 0 0
0.01 0.02 0 0
0.27 0 0 0
0.76 0 0 0
1 0.02 0 0
0.81 0.52 0 0
0.32 1 0 0
0.07 0.52 0 0
0.01 0.13 0 0
0 0.02 0 0
0 0 0.01 0
0 0 0.27 0
0 0 0.76 0
0 0 1 0.02
0 0 0.81 0.52
0 0 0.32 1
0 0 0.07 0.52
0.01 0 0.01 0.13
0.27 0 0 0.02
0.76 0 0 0
Subject Author Posted

granger causality -- event-related design

Robin March 12, 2010 10:44PM

Re: granger causality -- event-related design

Gang Chen March 15, 2010 09:24AM

Re: granger causality -- event-related design

Robin March 19, 2010 12:07PM

Re: granger causality -- event-related design

Gang Chen March 19, 2010 04:34PM

Re: granger causality -- event-related design

Robin March 19, 2010 05:11PM