The version 4 method smooths 3D in the volume, so you run the risk of smoothing across sulci before you sample on the surface. Otherwise, it's going to be pretty similar. When you look at your results, check to see whether some activation spots look like they could be bridging a sulcus. If not, I don't think you need to re-run.
doug Chindhuri Selvadurai wrote: > Hello, > > We have a question about preprocessing in fs4 compared to fs5. We used the > preproc-sess command without specifying -surface or volume and did all our > processing and analysis in fs5. I believe in fs4 you didn't have to > specify this. > > Do you think this is a problem for doing both surface and volume based > analyses? Do you think it wise to redo the preprocessing? > > Let us know if you need more info. > > Subjects dir: /cluster/manoach/milton/subjects > Command used: preproc-sess -s "$subject" -d > /cluster/manoach/milton/subjects/ -per-run -fwhm 8 > > _______________________________________________ > 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: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ 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.
