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help > RE: Extract Connectivity Value Within Cluster
Apr 15, 2022 09:04 AM | max345
RE: Extract Connectivity Value Within Cluster
Dear all,
I have additional questions about this topic. I want to compare the connectivity values between to groups and want to control this for another variable by using a seed-based connectivity analysis in the 2nd-level tab. After selecting my group variable(s) and control variable/covariate in the 2nd-level tab, I can use the option "import values" from the results-explorer. Afterwards, I can export theses values from the "covariates (2nd level)"-option in the setup tab to a txt-file or csv-file.
1) And these connectivity values represent the comparison between my two groups controlled for another variable, right?
2) What are these values exactly? z-scores?
Thank you for your help!
Best
Max
Originally posted by Alfonso Nieto-Castanon:
I have additional questions about this topic. I want to compare the connectivity values between to groups and want to control this for another variable by using a seed-based connectivity analysis in the 2nd-level tab. After selecting my group variable(s) and control variable/covariate in the 2nd-level tab, I can use the option "import values" from the results-explorer. Afterwards, I can export theses values from the "covariates (2nd level)"-option in the setup tab to a txt-file or csv-file.
1) And these connectivity values represent the comparison between my two groups controlled for another variable, right?
2) What are these values exactly? z-scores?
Thank you for your help!
Best
Max
Originally posted by Alfonso Nieto-Castanon:
Hi
Steven,
From the results-explorer window of your original SBC analysis, simply click on 'import values' and that will compute those average connectivity values per-subject and per-cluster, and it will import them as new second-level variables to your CONN project (if you want, you can then go to Setup.Covariates (2nd-level) to see those new variables and perhaps use the 'Covariate tools. Export selected covariate(s) data to file' option to export those connectivity values to a file?)
Best
Alfonso
Originally posted by Steven Meisler:
From the results-explorer window of your original SBC analysis, simply click on 'import values' and that will compute those average connectivity values per-subject and per-cluster, and it will import them as new second-level variables to your CONN project (if you want, you can then go to Setup.Covariates (2nd-level) to see those new variables and perhaps use the 'Covariate tools. Export selected covariate(s) data to file' option to export those connectivity values to a file?)
Best
Alfonso
Originally posted by Steven Meisler:
Hello,
I have ran a SBC analysis which identified a cluster that I want to analyze further. Specifically, I want to extract the average connectivity values within that cluster for all individual subjects. I have the CON_SubjectXX_compA001_001.nii.gz files from the second-level analyses folder, as well as the significant cluster saved out as a binary mask. However, the dimensions of the cluster mask and CON files are different, so I can't seem to simply use fslmaths to find the average value within that cluster. Does anyone have other suggestions?
Thank you,
Steven
I have ran a SBC analysis which identified a cluster that I want to analyze further. Specifically, I want to extract the average connectivity values within that cluster for all individual subjects. I have the CON_SubjectXX_compA001_001.nii.gz files from the second-level analyses folder, as well as the significant cluster saved out as a binary mask. However, the dimensions of the cluster mask and CON files are different, so I can't seem to simply use fslmaths to find the average value within that cluster. Does anyone have other suggestions?
Thank you,
Steven
Threaded View
| Title | Author | Date |
|---|---|---|
| Steven Meisler | Mar 15, 2021 | |
| Alfonso Nieto-Castanon | Mar 21, 2021 | |
| max345 | Apr 15, 2022 | |