Carolina, It means its smoothing on the surface with a kernel of 10mm full-width half-max. Smoothing on the surface can generally be larger than in a volume. See these slides for a description of the difference:
http://surfer.nmr.mgh.harvard.edu/pub/docs/fs.surface-based-analysis.ppt you can use a lower fwhm, it just depends on your expected blob size (there is no formula for the 'right' smoothing level). Nick > Hello, > <div>In the qdec analysis the default smoothing factor is 10. What does it > mean? For other technics such as fMRI we generally use a lower smoothing > factor (~3 or lower). What would happen if I low down the FWHM?</div> > <div>Thank you, Carolina</div> > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer _______________________________________________ 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.
