Hi Keith, if you don't have any Neutral in a session, you can't do a Good-Neutral comparison. If you have multiple runs within a session, then it should be ok. doug
On 12/07/2012 03:02 PM, Keith Yoder wrote: > Hi Doug, > > I'm having a similar problem. Subjects had the opportunity to > classify stimuli into one of three categories (Good, Bad, Neutral). > For some subjects, one of more of the runs did not contain any > stimuli that they classified as Neutral. If I want to look at a > contrast that compare Good-Neutral, how should I go about doing this > with FS-FAST? I'd like to keep the runs that contained neutral > classifications for those subjects, but if I have to throw out those > subjects to get the contrast, I guess I could. > > Thanks, > Keith > -- > Keith Yoder > PhD Student, Integrative Neuroscience > Social Cognitive Neuroscience Laboratory > The University of Chicago > 5846 S. University Avenue, Kelly 312 > Chicago, IL 60637 > Phone: 574-215-9678 > kjyo...@uchicago.edu <mailto:kjyo...@uchicago.edu> > > > > > On Thu, Mar 1, 2012 at 2:27 PM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote: > > If you have an event type for which there is no event, then that is > definitely the problem. Let me know if it is not that. > doug > > Sid Kundu wrote: > > It is attached. Finn mentioned it may be due to an event number > being > > missing from the particular subject, which could be possible in the > > analysis I am doing. > > _________________________________ > > Sid Kundu > > Biomedical Engineering > > Boston University > > > > > > > > On Thu, Mar 1, 2012 at 11:15 AM, Douglas N Greve > > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>> wrote: > > > > It's probably a problem with your design. Can you send me the > > Xtmp.mat file? > > doug > > > > > > Sid Kundu wrote: > > > > Hi Doug, > > > > I created a new first level analysis along with new > contrasts > > and event numbers for a group of subjects I had previously > > done analyses on. All but one of the subjects finished > > selxavg3 without error, but one subject gave the > following error: > > > > > > Saving X matrix to > > > > /home/sidkundu/freesurfer/sessions/Heading-TTP/LMV2010_N19_Heading-TTP/bold/TTP-analysis-3/Xtmp.mat > > Error using svd > > Input to SVD must not contain NaN or Inf. > > > > Error in cond (line 39) > > s = svd(A); > > > > Error in fast_selxavg3 (line 248) > > XCond = cond(XtX); > > >> ------------------------------------------ > > ERROR: fast_selxavg3() failed\n > > > > > > I looked at the generated Xtmp.mat file and it shows the > > design matrix X has all zeros in 2 columns, resulting in > NaNs > > in the same columns for Xn, and corresponding NaNs in > XtX. I'm > > wondering what would cause this or why it would only > occur for > > only one subject. > > > > _________________________________ > > Sid Kundu > > Biomedical Engineering > > Boston University > > > > > > -- > > Douglas N. Greve, Ph.D. > > MGH-NMR Center > > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> > > Phone Number: 617-724-2358 <tel:617-724-2358> > <tel:617-724-2358 <tel:617-724-2358>> Fax: 617-726-7422 > <tel:617-726-7422> > > <tel:617-726-7422 <tel:617-726-7422>> > > > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > > FileDrop: > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > > > > > > > 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. > > > > > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > Phone Number: 617-724-2358 <tel:617-724-2358> > Fax: 617-726-7422 <tel:617-726-7422> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu <mailto: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: 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
