I don't think there is a justification really. You might just find some other pubs that use the same amount, but that is not a justification either. doug
On 09/24/2013 11:44 AM, Tara Ann Miskovich wrote: > Thank you so much for your help. The fwhm of 0 and 5 both work. I was > wondering if you knew of any references or sites I could reference to justify > this level of smoothing. > > Tara > > ----- Original Message ----- > From: "Marie Schaer" <marie.sch...@unige.ch> > To: "Douglas N Greve" <gr...@nmr.mgh.harvard.edu> > Cc: "Nick Schmansky" <ni...@nmr.mgh.harvard.edu>, > freesurfer@nmr.mgh.harvard.edu > Sent: Wednesday, September 4, 2013 10:36:14 AM > Subject: Re: [Freesurfer] Monte Carlo Simulation in Qdec > > > Hi Tara, > You can try with fwhm=0 as Doug suggested, or 5 if it works. I'm still trying > to see whether the level of fwhm could be modified in qdec so that you can > input your own level (e.g. 1 or 2, instead of the specified 0-5-10-15-20-25). > > Nick, > Do you know if there is a keyword that can be changed in .Qdecr to add > different smoothing values to the FWHM menu in Qdec? > > Thanks! > > Marie > > > > On Sep 4, 2013, at 8:03 AM, Douglas N Greve <gr...@nmr.mgh.harvard.edu> > wrote: > >> Hi Tara, The problem is that the lGI is already very smooth and then it >> gets smoothed again. This causes the total smoothness level to go beyond >> what has been done for the simulation. Try using fwhm=0. >> >> doug >> >> >> On 09/04/2013 09:48 AM, Tara Ann Miskovich wrote: >>> Hello, >>> >>> I am conducting group analyses with LGI data in qdec, and I am having an >>> issue with the monte carlo simulation I am hoping to get help with. >>> >>> Under design I leave the Smoothing (FWHM) at 10, and when I try to run the >>> monte carlo simulation after running the analysis I get this error: Error >>> in Monte Carlo simulation: Error running mri_surfcluster. Plus in the >>> terminal I get an error: mri_surfclusterfwhm.dat: 37.226284, rounded to 38 >>> Error: fwhm out-of-range (< 1 or > 30)! >>> >>> Should I be using fwhm0 for LGI data? >>> >>> Thank you for your help! >>> >>> Tara >>> _______________________________________________ >>> 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. >> > > _______________________________________________ > 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
