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help > RE: Questions for ROI to ROI analysis
Oct 10, 2012 10:10 PM | Alfonso Nieto-Castanon - Boston University
RE: Questions for ROI to ROI analysis
Hi Lee,
You can simply ignore the 28th column (in this case the 28th ROI is likely the gray-matter-voxels ROI created by default by the conn toolbox). In general, the ROI to ROI single subject matrices will be of size m x n (with n>=m, where m is the number of 'source' ROIs -only those ROIs that have been selected as 'sources' in the 'first-level analyses' step-, and m is the total number of ROIs in your project -all ROIs except those included in the 'preprocessing' step as potential confounds-), and these matrices are sorted so that the first m columns correspond to the same ROIs as those in the first m rows. Let me know if this clarifies
Best
Alfonso
Originally posted by Sang Won Lee:
You can simply ignore the 28th column (in this case the 28th ROI is likely the gray-matter-voxels ROI created by default by the conn toolbox). In general, the ROI to ROI single subject matrices will be of size m x n (with n>=m, where m is the number of 'source' ROIs -only those ROIs that have been selected as 'sources' in the 'first-level analyses' step-, and m is the total number of ROIs in your project -all ROIs except those included in the 'preprocessing' step as potential confounds-), and these matrices are sorted so that the first m columns correspond to the same ROIs as those in the first m rows. Let me know if this clarifies
Best
Alfonso
Originally posted by Sang Won Lee:
Hello. conn users.
I'm doing ROI to ROI analysis using conn.
I have a question about single subject matrix
I didn't check any box(multiple ROIs, mask with grey matter and regress out covariates) in grey matter in preprocessing, and I set only 27 ROIs as sources in first level analysis.
However, I got 27 x 28 matrix when i received the single subject file in conn_*/results/firstlevel/ANALYSIS_01/resultsROI_Subject###_Condition###.mat following FAQ 14
Is there any possibility to interrupt the semipartial correlation result if grey matter included as target? or can I ignore the 28th column?
Thank you in advance.
Lee.
I'm doing ROI to ROI analysis using conn.
I have a question about single subject matrix
I didn't check any box(multiple ROIs, mask with grey matter and regress out covariates) in grey matter in preprocessing, and I set only 27 ROIs as sources in first level analysis.
However, I got 27 x 28 matrix when i received the single subject file in conn_*/results/firstlevel/ANALYSIS_01/resultsROI_Subject###_Condition###.mat following FAQ 14
Is there any possibility to interrupt the semipartial correlation result if grey matter included as target? or can I ignore the 28th column?
Thank you in advance.
Lee.
Threaded View
| Title | Author | Date |
|---|---|---|
| Sang Won Lee | Sep 27, 2012 | |
| Alfonso Nieto-Castanon | Oct 10, 2012 | |
| Sang Won Lee | Oct 11, 2012 | |