help
help > RE: identifying source/target ROI labels in nii file - export ROI-to-ROI gPPI matrix (niii 4D image)
Apr 25, 2022 09:04 PM | Alfonso Nieto-Castanon - Boston University
RE: identifying source/target ROI labels in nii file - export ROI-to-ROI gPPI matrix (niii 4D image)
Hi Ricardo,
Yes, the ROI-to-ROI matrices exported by CONN always encode sources in rows and target in columns, i.e. Z(i,j) is the connection between the i-th ROI (source) and j-th ROI (target)
Hope this helps
Alfonso
Originally posted by Ricardo Martins:
Yes, the ROI-to-ROI matrices exported by CONN always encode sources in rows and target in columns, i.e. Z(i,j) is the connection between the i-th ROI (source) and j-th ROI (target)
Hope this helps
Alfonso
Originally posted by Ricardo Martins:
Hi !
I am using the latest version (21a) of CONN toolbox.
I exported the results of a ROI-to-ROI gPPI analysis in the form of a 4D nii image and json file describing the labels of the ROIs and the ID of the matrices in the 4D nii image.
Considering one of the 2D matrix describing the ROI-to-ROI beta gPPI in the nii file, I was wondering how do we know what are the sources ROIs and what are the target ROIs (gPPI betas are direction dependent). Are the source ROIs the ROIs in X dimension of the nii image and the target ROIs the ROIs in the Y dimension of the nii image ? Where can I find/confirm that information ?
Considering this example/table https://i.imgur.com/qR2aVWf.png
Is there a way to display/show in this table the labels corresponding to the numbers identifying the ROIs ? Are the numbers showed in the format of "connection source ROI - target ROI" ?
Thank you.
best regards,
Ricardo Martins
I am using the latest version (21a) of CONN toolbox.
I exported the results of a ROI-to-ROI gPPI analysis in the form of a 4D nii image and json file describing the labels of the ROIs and the ID of the matrices in the 4D nii image.
Considering one of the 2D matrix describing the ROI-to-ROI beta gPPI in the nii file, I was wondering how do we know what are the sources ROIs and what are the target ROIs (gPPI betas are direction dependent). Are the source ROIs the ROIs in X dimension of the nii image and the target ROIs the ROIs in the Y dimension of the nii image ? Where can I find/confirm that information ?
Considering this example/table https://i.imgur.com/qR2aVWf.png
Is there a way to display/show in this table the labels corresponding to the numbers identifying the ROIs ? Are the numbers showed in the format of "connection source ROI - target ROI" ?
Thank you.
best regards,
Ricardo Martins
Threaded View
| Title | Author | Date |
|---|---|---|
| Ricardo Martins | Apr 20, 2022 | |
| Alfonso Nieto-Castanon | Apr 25, 2022 | |