help > gPPI values (from a contrast/cond) to behavior correlation
Apr 27, 2022  11:04 AM | Panagiotis Iliopoulos
gPPI values (from a contrast/cond) to behavior correlation
Dear Alfonso / CONN users,

I have a pair of significant connections (in a contrast cond. B > A, task gPPI connectivity). I am interested to see whether the gPPI ROI-to-ROI connectivity values correlate to behavior (e.g. False alarms).  

[see attached pic from the 2nd level viewer for overview these results]

I am not sure how I can proceed here.
My understanding says to get the 1st level gPPI values (must be the BETA values/map image files located at the 1st level folder created by CONN) and correlate these to the behavioral variable.

Q:
1) how I can link these maps to a behavioral variable? 
(these BETA 1st level values/maps will need to be inserted in SPM? is it possible to do this analysis inside CONN?); not sure overall how to do this.

1b) how I can get the contrast of conditions (B minus A) values to do this? (instead of just condB or condA that exist in that 1st level folder)

2) These 1st level BETA maps are based on seed-to-voxel connectivity (not ROI-to-ROI) from what I understand. Where does CONN store the ROI-to-ROI connectivity values (see my results) to use those to do brain-behavior correlation ?


Many thanks in advance :)

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TitleAuthorDate
gPPI values (from a contrast/cond) to behavior correlation
Panagiotis Iliopoulos Apr 27, 2022
Alfonso Nieto-Castanon Apr 28, 2022