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  

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JW
August 26, 2021 02:40PM
Dear AFNI experts,

I am interested in analyzing the correlation matrix between nodes using Power et al. (2011). There are 264 regions of interest in the Power atlas.

Power, J. D., Cohen, A. L., Nelson, S. M., Wig, G. S., Barnes, K. A., Church, J.
A., . . . Petersen, S. E. (2011). Functional network organization of the
human brain. Neuron, 72(4), 665-678. doi:10.1016/j.neuron.2011.09.006

I used the below 3dUndump script and a text file that has all the x,y,z coordinates from the Power paper to create nodes.

3dUndump -master /subj/errts.subj.fanaticor+tlrc \
-orient LPI \
-prefix nodes_264 \
-srad 5 \
-xyz powerrois_264.txt

The above script created a single tlrc file with all 264 nodes. After creating the spherical regions of interest, I used 3dNetCorr script below.

3dNetCorr -inset /subj/errts.subj.fanaticor+tlrc \
-prefix subj.netcorr \
-in_rois nodes_264+tlrc \
-fish_z \
-ts_out -ts_label -ts_indiv

The .netcc output file looked like below, which I think is weired.
# 1 # Number of network ROIs
# 2 # Number of netcc matrices
# WITH_ROI_LABELS
001
1
# CC
1.0000
# FZ
4.0000

I was expecting to have a 264 x 264 correlation matrix (z score) between the regions of interest from the .netcc output. Could you please let me know what would be an issue here?

Best,
JW
Subject Author Posted

Functional connectivity analyses questions (3dUndump and 3dNetCorr)

JW August 26, 2021 02:40PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

ptaylor August 26, 2021 02:51PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr) Attachments

JW August 26, 2021 03:10PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

ptaylor August 26, 2021 03:29PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

JW August 26, 2021 04:53PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

ptaylor August 26, 2021 04:59PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

JW August 26, 2021 05:49PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

ptaylor August 26, 2021 06:24PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

JW August 27, 2021 10:06AM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

ptaylor August 27, 2021 04:35PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

JW August 27, 2021 05:39PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

ptaylor September 01, 2021 01:55PM

Re: Functional connectivity analyses questions (3dUndump and 3dNetCorr)

JW September 02, 2021 03:37PM