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help > RE: ROI timecourse from text file
Dec 10, 2014 02:12 AM | Alfonso Nieto-Castanon - Boston University
RE: ROI timecourse from text file
Hi Kajsa,
I am assuming that you want to enter into CONN a pre-defined BOLD-signal timeseries (e.g. to be used as seed for seed-to-voxel analyses, for example)? If that is the case you need to add that file as a new first-level covariate instead (in Setup.Covariates.first-level; simply add there the same .txt files that you are using now, those should be one file per subject/session and each file containing as many numbers as timepoints in your corresponding BOLD volumes for that subject/session)
Once you do that, and you run through the Setup step, make sure that this covariate is not added to the 'Confounds' list in the Denoising step (by default all first-level covariates are added to the confounds list during denoising, so just take it out of there before running the Denoising step). Once you run through the Denoising step you will have that new covariate available in the first-level analysis tab as a new source/ROI (and you can use that as any other ROI for seed-to-voxel analyses, ROI-to-ROI analyses, etc.)
Hope this helps
Alfonso
Originally posted by Kajsa Igelstrom:
I am assuming that you want to enter into CONN a pre-defined BOLD-signal timeseries (e.g. to be used as seed for seed-to-voxel analyses, for example)? If that is the case you need to add that file as a new first-level covariate instead (in Setup.Covariates.first-level; simply add there the same .txt files that you are using now, those should be one file per subject/session and each file containing as many numbers as timepoints in your corresponding BOLD volumes for that subject/session)
Once you do that, and you run through the Setup step, make sure that this covariate is not added to the 'Confounds' list in the Denoising step (by default all first-level covariates are added to the confounds list during denoising, so just take it out of there before running the Denoising step). Once you run through the Denoising step you will have that new covariate available in the first-level analysis tab as a new source/ROI (and you can use that as any other ROI for seed-to-voxel analyses, ROI-to-ROI analyses, etc.)
Hope this helps
Alfonso
Originally posted by Kajsa Igelstrom:
I should add I tried to do this by selecting the
1-column .txt files under the ROI tab in the GUI, and the time
courses appeared to load (showed up graphically), but then I got an
error message during processing that the file format was not
recognized.
Originally posted by Kajsa Igelstrom:
Originally posted by Kajsa Igelstrom:
Hi,
I'm wondering if there is a way to define a seed timecourse using a 1D text file, instead of supplying mask files?
Many thanks!
Kajsa
I'm wondering if there is a way to define a seed timecourse using a 1D text file, instead of supplying mask files?
Many thanks!
Kajsa
Threaded View
| Title | Author | Date |
|---|---|---|
| Kajsa Igelström | Dec 8, 2014 | |
| Kajsa Igelström | Dec 8, 2014 | |
| Alfonso Nieto-Castanon | Dec 10, 2014 | |
| Kajsa Igelström | Dec 10, 2014 | |