Hi Leila, yes, the problem is probably in that fsfast sets the TER=.05. I never expected the TR or the event duration to be less than this (silly me). The -refeventdur does not really effect much, it just controls some scaling. Setting it to 16ms is fine. doug
On 07/23/2013 08:23 AM, Leila Reddy wrote: > Hi Doug, > > Thanks for your reply. Yes, it does work with a longer -refeventdur. In > fact, I had tried that yesterday before posting my original message but > I'd forgotten to make the corresponding changes to the 3rd column of the > paradigm file and so kept getting the error message. > > The shortest I can bring -refeventdur down to is 0.05. Anything smaller > causes the same error as before. In the end it's not a huge problem for > us if we have to set an event duration of 50ms instead of 16.6 ms but > I'd like to understand what is going on. > > So, I wondered if the error had anything to do with the fact that when I > run mkcontrast-sess the script automatically sets -TER to 0.05. I re-ran > the analysis and set -TER and -refeventdur to 0.016 in mkanalysis-sess. > The analysis runs with no > error for selxavg-sess and visually (with > tksurfer) the results look the same as with -TER and -refeventdur set to > 0.05. > > Since the help for mkanalysis-sess -TER says " It is best to know what > you are doing if you are going to change this.", I'd like to know if it > makes sense to change the TER like I have. What does the TER achieve (if > that's not too complicated a question)? > > Thanks again, > Leila > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
