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help > RE: ART clarification
Jan 16, 2015 01:01 AM | Alfonso Nieto-Castanon - Boston University
RE: ART clarification
Hi Fred,
Yes, ART will simply identify the outlier scans and output that information into a art_*.mat file but it will not modify and/or remove anything in the original BOLD timeseries (which is left intact).
That new .mat file is simply input into CONN as a first-level covariate which, when entered as a Confounding effect during denoising, will make CONN disregard those identified time-points from any subsequent analysis (by adding a column for each outlier scan -dummy coding the offending timepoint- to the design matrix used during denoising to regress out all effects of no interest)
Hope this helps clarify
Alfonso
Originally posted by Fred Uquillas:
Yes, ART will simply identify the outlier scans and output that information into a art_*.mat file but it will not modify and/or remove anything in the original BOLD timeseries (which is left intact).
That new .mat file is simply input into CONN as a first-level covariate which, when entered as a Confounding effect during denoising, will make CONN disregard those identified time-points from any subsequent analysis (by adding a column for each outlier scan -dummy coding the offending timepoint- to the design matrix used during denoising to regress out all effects of no interest)
Hope this helps clarify
Alfonso
Originally posted by Fred Uquillas:
Hi NITRC community!
I just want to verify that the automatic preprocessing done via ART through the Conn toolbox is not physically removing any outlier time points from the time-series.
The word 'Srubbing' in this case is not synonymous with the 'Scrubbing' done with other artifact toolboxes such as ArtRepair, so that phrase has made us want to verify that no physical time points are being removed.
Thank you so much, and happy new year!!
Fred
I just want to verify that the automatic preprocessing done via ART through the Conn toolbox is not physically removing any outlier time points from the time-series.
The word 'Srubbing' in this case is not synonymous with the 'Scrubbing' done with other artifact toolboxes such as ArtRepair, so that phrase has made us want to verify that no physical time points are being removed.
Thank you so much, and happy new year!!
Fred
Threaded View
| Title | Author | Date |
|---|---|---|
| Fred Uquillas | Jan 15, 2015 | |
| Alfonso Nieto-Castanon | Jan 16, 2015 | |
| Fatima Sibaii | Apr 10, 2019 | |
| Annchen Knodt | Mar 22, 2016 | |
| Alfonso Nieto-Castanon | Mar 23, 2016 | |
| Annchen Knodt | Apr 15, 2016 | |
| Fred Uquillas | Jan 20, 2015 | |