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Hello, I’ve been trying to get to the bottom of why selxavg3-sess is failing for lack of a mcprextreg motion correction parameters file for one or more of the functional runs. I have 6 runs of BOLD data, and following the last failed attempt, we cleared out the run folders to start again from scratch with preprocess on the f.nii volumes.
We are running preproc-sess on a per-run basis:
preproc-sess -s SUBJECTNAME -per-run -surface fsaverage lhrh -mni305 -fsd bold -fwhm 4 -sliceorder up
After doing this, we find that the folders for runs 1,2,3,4 and 6 contain the file mcprextreg, but run 5 does not. Consequently, selxavg3-sess throws an error and aborts when it fails to find this file for run 5. Prior to our do-over, we had the same issue, so it appears that this file is reliably not being generated only for run 5. To further the mystery, a second dataset (different participant) was recently preprocessed and also is missing this file for runs 1 and 5.
I notice that the runs with the missing motion correction parameter each contain a tmpdir.mcdat2extreg.##### folder, which suggests that the process might have not completed, though it’s odd that it would have completed for runs 1-4 and 6, but not 5.
I was hoping someone might have some suggestions for debugging why this file might not be getting generated, as well as what steps might be taken to force its creation. I’m going to start by deleting the tmpdir folders.
Thanks, Chris
/********************************************** * Chris McNorgan * Assistant Professor * Department of Psychology * University at Buffalo, * The State University of New York * http://ccnlab.buffalo.edu/ * Office: 716.645.0236 * Lab: 716.645.0222 **********************************************/